Setting Up eSIM on Foldable Smartphones: The Complete 2025 Configuration and Compatibility Guide

The foldable smartphone revolution has arrived. With over 22 million foldable devices shipped globally in 2024 and projections reaching 40 million units in 2025, these innovative devices are no longer niche products for early adopters. However, the unique dual-screen architecture of foldables introduces specific challenges when configuring eSIM connectivity—challenges that standard smartphone guides simply don't address.

This comprehensive guide tackles the distinct eSIM setup requirements for foldable devices, from managing connectivity transitions during fold/unfold operations to optimizing multi-profile configurations across different screen modes. Whether you're using a Samsung Galaxy Z Fold 6, Google Pixel Fold 2, or one of the new 2025 foldable models, you'll find brand-specific solutions to ensure seamless connectivity.

Understanding eSIM Architecture in Foldable Devices

Foldable smartphones present a unique technological challenge: maintaining consistent network connectivity across two physical screens that operate in different modes. Unlike traditional smartphones, foldables must manage eSIM profiles while transitioning between cover screen and main display operations, handling different antenna configurations, and managing power states across hinged components.

The eSIM chip in foldable devices communicates with multiple antenna arrays positioned strategically around the hinge mechanism. When you fold or unfold your device, the active antenna configuration may shift, potentially causing brief connectivity interruptions if not properly configured. Understanding this architecture is crucial for optimal eSIM performance.

Key Differences from Standard Smartphones

Foldable devices handle eSIM connectivity differently in several critical ways:

• Dual antenna arrays: Separate antenna systems for cover and main displays require seamless handoff protocols
• Power management complexity: Different screen modes consume varying power levels, affecting network signal strength
• Hinge interference: The mechanical hinge can create electromagnetic interference zones that impact signal reception
• Split-screen multitasking: Running data-intensive apps on both screens simultaneously can strain eSIM bandwidth management
• Flex mode configurations: Mid-fold positions require adaptive antenna switching to maintain optimal signal

Foldable Phone eSIM Compatibility in 2025

Not all foldable smartphones support eSIM technology equally. Here's a comprehensive breakdown of current compatibility across major manufacturers:

Carrier-Specific Limitations

Even with eSIM-compatible hardware, carrier support varies significantly. As of November 2025, major carriers have implemented different policies for foldable devices:

• US carriers: T-Mobile, AT&T, and Verizon fully support eSIM on all major foldables, though some MVNO carriers may restrict dual eSIM functionality
• European carriers: Most major operators support eSIM, but some require specific firmware versions for foldable devices
• Asian markets: Carrier support is fragmented, with Japan and South Korea leading in compatibility while some Southeast Asian carriers still require physical SIM cards
• Middle East and Africa: Limited eSIM infrastructure means many carriers don't officially support foldable device configurations

Step-by-Step eSIM Setup for Samsung Galaxy Z Series

Samsung's Galaxy Z Fold and Z Flip series dominate the foldable market, accounting for approximately 68% of global foldable sales in 2024. Here's how to configure eSIM on these devices while addressing their unique characteristics.

Initial eSIM Installation on Galaxy Z Devices

Before beginning, ensure your device is running One UI 6.1 or later, as earlier versions had known issues with eSIM profile switching during fold transitions.

Preparation checklist:

• Verify your device is unlocked or carrier-approved for eSIM
• Ensure stable Wi-Fi connection (cellular data can cause installation failures)
• Have your eSIM QR code or activation details ready
• Close all apps running on both screens to prevent interruption
• Charge battery to at least 50% to prevent mid-installation power loss

Installation process:

• Open Settings from either the cover screen or main display
• Navigate to Connections > SIM manager
• Select "Add eSIM" or "Add mobile plan"
• Choose your installation method (QR code, activation code, or carrier app)
• For QR code scanning: unfold the device completely and use the main display camera for better accuracy
• Follow the on-screen prompts, keeping the device unfolded during the entire process
• Wait for the "eSIM installed successfully" confirmation before folding the device
• Restart the device to ensure proper antenna array initialization

Configuring Dual eSIM on Galaxy Z Fold 6

The Galaxy Z Fold 6 supports up to two active eSIM profiles simultaneously, plus one physical SIM. This configuration requires careful management to prevent connectivity conflicts.

Optimal dual eSIM setup:

• Install your primary eSIM profile first while device is unfolded
• Complete full network registration before adding the second profile
• Install secondary eSIM with device in the same screen mode you'll primarily use it
• Configure data preferences in Settings > Connections > SIM manager > Mobile data
• Set up separate profiles for calls, texts, and data to prevent routing conflicts
• Enable "Smart network switch" only if both eSIMs are from compatible carriers

Critical Samsung-specific setting:

Navigate to Settings > Connections > More connection settings > Network mode and ensure "Auto select network" is enabled for both eSIM profiles. Galaxy Z devices have a known issue where manual network selection can cause dropped connections during fold/unfold transitions.

Troubleshooting Galaxy Z Connectivity Drops

The most common complaint among Galaxy Z foldable users involves brief connectivity losses during folding operations. Here's how to minimize these interruptions:

Antenna optimization:

• Enable "Enhanced LTE services" in Settings > Connections > Mobile networks
• Disable "Adaptive connectivity" if experiencing frequent drops (this feature can overcorrect during fold transitions)
• Set preferred network type to 5G/LTE/3G/2G (auto connect) rather than "5G only"
• Clear network settings cache: Settings > General management > Reset > Reset network settings (this won't delete eSIM profiles)

Flex mode considerations:

When using your Galaxy Z Fold in flex mode (partially folded), the device may struggle with antenna positioning. For video calls or streaming:

• Position the hinge away from your body to prevent signal blocking
• Use Wi-Fi calling when available to bypass cellular antenna limitations
• Avoid covering the top and bottom edges where primary antennas are located
• Enable "Keep mobile data on during Wi-Fi" for seamless transitions

Google Pixel Fold 2 eSIM Configuration

Google's second-generation foldable, released in March 2025, features enhanced eSIM management with native integration into Android 15's connectivity framework. The Pixel Fold 2 addresses many first-generation issues but introduces its own configuration quirks.

Pixel Fold 2 Unique Features

Google implemented several foldable-specific eSIM enhancements:

• Adaptive antenna switching: Automatically adjusts signal routing based on fold angle
• Screen-aware profile activation: Can trigger specific eSIM profiles based on which screen is active
• Dual-screen network monitoring: Real-time signal strength display on both screens simultaneously
• Intelligent profile switching: Machine learning-based automatic switching between eSIM profiles based on usage patterns

Installing eSIM via Google's Quick Setup

The Pixel Fold 2 offers the most streamlined eSIM setup process among foldables:

• Open Settings > Network & internet > SIMs
• Tap the "+" button to add a new eSIM
• Select "Download a SIM instead?" if offered a physical SIM
• Use the "Scan QR code" option with the main display camera for best results
• Alternatively, select "Enter activation code manually" if QR scanning fails
• Enable "Automatically switch between SIMs" for optimal foldable experience
• Configure "SIM preferences" to set default for calls, texts, and data

Pixel-specific optimization:

Navigate to Settings > Network & internet > Adaptive connectivity and enable "Auto-switch mobile data." This Pixel-exclusive feature intelligently manages eSIM data connections during fold transitions, significantly reducing dropped connections compared to other foldables.

Managing Multiple eSIM Profiles on Pixel Fold 2

The Pixel Fold 2 supports up to 10 stored eSIM profiles with 2 active simultaneously. Power users can leverage this for international travel or separate work/personal lines:

Profile management best practices:

• Name each eSIM profile descriptively (e.g., "Work - US," "Travel - Europe")
• Set custom notification sounds for each profile to distinguish incoming calls
• Use the "SIM security" feature to lock specific eSIM profiles with separate PINs
• Enable "Show SIM status in quick settings" to monitor active profiles from either screen
• Schedule automatic profile switching using Android 15's "Network scheduling" feature

Quick profile switching:

The Pixel Fold 2 allows instant eSIM profile changes without restarting:

• Swipe down from either screen to access Quick Settings
• Long-press the network icon to open SIM management
• Tap any inactive eSIM profile to activate it
• Wait 3-5 seconds for network registration
• The device maintains the previous profile in standby for faster re-activation

OnePlus Open 2 and Other 2025 Foldables

The competitive foldable market has expanded significantly in 2025, with several manufacturers offering eSIM-capable devices. Each brings unique configuration requirements.

OnePlus Open 2 eSIM Setup

OnePlus's second-generation foldable, launched in January 2025, uses OxygenOS 15 with enhanced eSIM management:

Installation process:

• Access Settings > Mobile network > SIM & network
• Select "Add eSIM" from the SIM card management screen
• OnePlus devices require unfolding during QR code scanning for optimal camera angle
• Complete installation on the main display to ensure proper antenna initialization
• Enable "Smart 5G" for optimized power management during fold transitions

OnePlus-specific issue:

The Open 2 has a documented bug where eSIM profiles may not automatically reconnect after airplane mode on the cover screen. Workaround: always disable airplane mode from the main display, or restart the device after extended airplane mode use.

Honor Magic V3 Configuration

Honor's ultra-thin foldable presents unique eSIM challenges due to its compact antenna design:

Setup considerations:

• Install eSIM profiles in an area with strong signal (weak signal during installation can cause permanent connectivity issues)
• Disable "Battery saver" mode during eSIM installation
• Use the "Network signal enhancement" feature in Settings > Mobile network
• Avoid installing eSIM while device is in a case, as this can interfere with antenna calibration

Regional variations:

The Honor Magic V3 has different eSIM capabilities depending on region:

• Global version: Full eSIM support with up to 5 profiles
• China version: Limited eSIM functionality, primarily for China Mobile and China Unicom
• European version: Enhanced eSIM support with carrier-specific optimizations

Motorola Razr 50 Ultra Flip Phone Setup

Motorola's clamshell foldable requires different eSIM configuration due to its vertical folding design:

Unique setup requirements:

• Always install eSIM with the device unfolded and standing upright
• The external cover screen cannot be used for eSIM QR code scanning
• Enable "Continuous app experience" to maintain network connections during fold transitions
• Configure "Ready For" mode before installing eSIM to ensure proper antenna initialization

Cover screen connectivity:

The Razr 50 Ultra's large external display can run apps while folded, but eSIM management must occur on the internal screen. To check eSIM status from the cover screen, add the "Network" widget to your cover screen layout.

Advanced Multi-Profile Management for Power Users

Managing multiple eSIM profiles on foldable devices requires strategic configuration to prevent conflicts and optimize performance across different screen modes.

Creating Screen-Specific eSIM Profiles

Advanced users can configure different eSIM profiles to activate based on which screen is in use:

Automation setup (Android 15+):

• Install the "Tasker" app or use built-in automation (Pixel, Samsung)
• Create a profile triggered by "Display State" (folded vs. unfolded)
• Set action to enable specific eSIM profile when cover screen is active
• Configure different profile for main display usage
• Add 5-second delay to prevent rapid switching during fold transitions

Use case scenarios:

• Cover screen: Enable low-data eSIM profile for quick tasks and notifications
• Main display: Activate high-speed 5G eSIM for productivity and streaming
• Flex mode: Switch to most reliable carrier profile for video calls
• Fully folded: Maintain minimal connectivity for background sync

Optimizing Data Usage Across Screen Modes

Foldable devices consume data differently depending on screen configuration:

Data management strategies:

• Set data limits per eSIM profile in Settings > Network & internet > Data usage
• Enable "Data saver" specifically for cover screen usage to preserve secondary eSIM data
• Configure app-specific data routing: social media on primary eSIM, work apps on secondary
• Use "Adaptive battery" to prevent background apps from consuming eSIM data on inactive screens
• Set up "Network usage alerts" to monitor data consumption per screen mode

International Travel Configuration

Foldable devices excel for international travel with proper eSIM configuration:

Pre-travel checklist:

• Download regional eSIM profiles before departure (airport Wi-Fi is often unreliable)
• Test new eSIM profiles while still in home country using manual network selection
• Configure primary home eSIM for Wi-Fi calling only to avoid roaming charges
• Set up automatic profile switching based on detected network country code
• Enable "Roaming" only on your travel eSIM profile, not your primary profile

In-destination optimization:

• Keep device unfolded during initial network registration in new country
• Allow 2-3 minutes for network authentication before folding device
• If experiencing connectivity issues, restart device while unfolded
• Use the main display for initial setup of local services and apps
• Monitor signal strength on both screens to identify optimal antenna positioning

Troubleshooting Common Foldable eSIM Issues

Despite improvements in 2025, foldable devices still experience unique eSIM-related problems. Here are solutions to the most frequently reported issues.

Connectivity Drops During Fold Transitions

Symptoms: Brief signal loss or "No service" message when folding/unfolding device

Solutions:

• Update to latest firmware (manufacturers release monthly patches addressing antenna algorithms)
• Disable "Adaptive connectivity" or similar battery-saving network features
• Manually select network operator instead of automatic selection
• Clear network cache: Settings > Apps > Show system apps > Phone > Storage > Clear cache
• Reset network settings (preserves eSIM profiles but resets Wi-Fi and Bluetooth)
• Contact carrier to verify eSIM profile is provisioned for "dual-screen device"

eSIM Profile Not Activating

Symptoms: Profile installed but shows "Not activated" or "No service"

Solutions:

• Ensure device is fully unfolded and stationary during activation
• Restart device with eSIM profile enabled
• Toggle airplane mode on/off from the main display
• Verify eSIM profile hasn't expired (some travel eSIMs have activation deadlines)
• Re-download eSIM profile if activation fails after 15 minutes
• Check if carrier requires specific APN settings for foldable devices

Dual eSIM Interference

Symptoms: One eSIM works but second profile causes both to disconnect

Solutions:

• Install eSIM profiles from different carriers to avoid network conflicts
• Disable "Auto select network" on secondary eSIM profile
• Set one eSIM to 4G/LTE and other to 5G to separate frequency bands
• Configure different preferred network types for each profile
• Ensure both eSIM profiles support VoLTE (voice over LTE)
• Stagger profile activation: enable primary, wait 30 seconds, then enable secondary

QR Code Scanning Failures

Symptoms: Camera won't focus on QR code or scan fails repeatedly

Solutions:

• Clean camera lenses on both screens (fingerprints cause focus issues)
• Use main display camera for scanning (higher resolution than cover screen)
• Increase screen brightness to maximum before scanning
• Position QR code 6-8 inches from camera for optimal focus distance
• Try manual code entry if QR scanning consistently fails
• Ensure QR code is displayed on a flat surface, not another phone screen
• Request new QR code from provider if code is damaged or expired

Hinge-Related Signal Degradation

Symptoms: Weaker signal strength in specific fold positions

Solutions:

• Avoid covering hinge area with hands during calls or data-intensive tasks
• Position device with hinge vertical rather than horizontal when possible
• Use Bluetooth headset for calls to maintain optimal device positioning
• Enable Wi-Fi calling to bypass cellular antenna limitations
• Update device firmware (manufacturers regularly improve hinge antenna algorithms)
• Consider using device primarily in fully folded or fully unfolded positions

Future-Proofing Your Foldable eSIM Setup

As foldable technology evolves, ensuring your eSIM configuration remains optimal requires proactive management.

Firmware and Carrier Updates

Manufacturers and carriers regularly release updates that improve foldable eSIM performance:

Update best practices:

• Enable automatic system updates in developer options
• Check for carrier settings updates monthly (separate from OS updates)
• Review update changelog for eSIM-specific improvements
• Backup eSIM profiles before major OS updates (some updates require re-installation)
• Test eSIM functionality immediately after updates to catch issues early

Emerging eSIM Standards for Foldables

The GSMA is developing foldable-specific eSIM standards expected to roll out in late 2025:

• Multi-screen profile persistence: Maintains active eSIM connections during fold transitions
• Antenna-aware provisioning: Automatically configures optimal settings based on device antenna layout
• Flex mode optimization: Enhanced signal management for partially folded positions
• Unified profile management: Simplified interface for managing multiple eSIM profiles across screen modes

Preparing for 6G and Beyond

With 6G networks expected to begin rollout in 2027-2028, foldable devices will need eSIM configurations that support new frequencies:

Future-ready configuration:

• Select eSIM providers offering forward-compatible profiles
• Enable "Network mode auto-select" to automatically adopt new standards
• Regularly review and update carrier settings to receive new frequency band support
• Consider devices with software-defined antennas that can adapt to future standards

Maximizing Your Foldable eSIM Experience

Foldable smartphones represent the cutting edge of mobile technology, and proper eSIM configuration is essential to unlock their full potential. The unique challenges of dual-screen devices—from antenna handoffs during fold transitions to managing multiple profiles across different screen modes—require specialized knowledge that standard smartphone guides simply can't provide.

By following the brand-specific configuration steps, implementing advanced multi-profile management strategies, and proactively troubleshooting common issues, you can ensure seamless connectivity regardless of how you use your foldable device. Whether you're managing work and personal lines on a Galaxy Z Fold 6, optimizing travel profiles on a Pixel Fold 2, or configuring any of the new 2025 foldable models, the techniques in this guide will help you maintain reliable, high-performance connectivity.

Remember that foldable eSIM technology continues to evolve rapidly. Staying current with firmware updates, carrier provisioning changes, and emerging standards will ensure your device remains optimized for years to come. As manufacturers refine antenna algorithms and carriers expand eSIM support, the minor connectivity quirks that exist today will continue to diminish.

For travelers and digital nomads using foldable devices, global eSIM connectivity has never been more accessible. Services like AlwaySIM provide instant eSIM activation across 190+ countries, with profiles specifically optimized for foldable device architectures. With proper configuration and the right connectivity partner, your foldable smartphone can deliver seamless global connectivity whether you're working from the cover screen during your commute or enjoying media on the expansive main display.