“Unable to Complete Cellular Plan Change” — How to Fix This eSIM Error (Figabytes Guide)

If you’re installing or switching to your Figabytes eSIM and you see this message:

“Unable to Complete Cellular Plan Change.”

Don’t worry — this error is common across both iPhone and Android devices.
It simply means your phone couldn’t finish updating your mobile data settings.

This guide explains what causes it and how to fix it quickly.

❗ Why This Error Happens

This message appears when your device tries to update your cellular plan settings but can’t complete the change due to one of the following reasons:

• Temporary network glitch

• Incomplete eSIM installation

• Conflicting SIM/eSIM settings

• Your phone is connected to a weak Wi-Fi network

• Data settings didn’t refresh properly

• Outdated iOS/Android version

• A VPN or firewall blocked the connection

Most of the time, the fix is simple.

✅ Fix 1 — Restart Your Device

A fresh reboot resets the network stack.

1. Turn the phone OFF

2. Wait 10 seconds

3. Turn it ON

4. Try turning the Figabytes eSIM line ON again

This resolves the majority of cases.

✅ Fix 2 — Toggle Airplane Mode

1. Turn Airplane Mode ON

2. Wait 5–10 seconds

3. Turn Airplane Mode OFF

4. Reopen Settings → Mobile Data → Select Figabytes

This forces a network refresh.

✅ Fix 3 — Turn the Figabytes Line OFF → ON

iPhone:

Settings → Mobile Data → Figabytes → Turn On This Line OFF → ON

Android:

Settings → SIMs → Figabytes → Disable → Enable

This triggers a new attempt to apply the cellular plan change.

✅ Fix 4 — Make Sure You’re Connected to Strong Wi-Fi

Apple and Android require Wi-Fi for certain types of cellular plan updates.

• Switch to a different Wi-Fi network

• Avoid hotel/airport Wi-Fi with login portals

• Turn VPN off (VPNs can block activation traffic)

Then try reactivating the Figabytes line.

✅ Fix 5 — Update Your Operating System

Outdated OS versions may reject new eSIM changes.

iPhone:

Settings → General → Software Update

Android:

Settings → Software Update

Update → Restart → Re-enable the Figabytes line.

✅ Fix 6 — Reapply Mobile Data Settings

Sometimes the phone doesn’t refresh your data line correctly.

iPhone:

1. Go to Settings → Mobile Data

2. Set Mobile Data → Figabytes

3. Enable Data Roaming

4. Try toggling the line again

Android:

1. Settings → Network & Internet → SIMs

2. Set Mobile Data → Figabytes

3. Turn Data Roaming ON

✅ Fix 7 — Add or Reapply the APN

If your APN didn’t auto-load, the cellular plan update may fail.

iPhone:

Settings → Mobile Data → Mobile Data Network → APN → enter the APN from your Figabytes order

Android:

Settings → Mobile Networks → Access Point Names → Add APN

Save → Restart.

🚫 When the Error Means Something Else

If you are still seeing the error after trying all fixes, it may mean:

• The eSIM was previously used on another device

• The eSIM was deleted after activation

• Your phone is carrier-locked

• Your device region does not support eSIM

• Your Figabytes plan has expired or is corrupt

In these cases, you may need a replacement eSIM.

📩 Still Stuck? Contact Figabytes Support

Send us:

• Your device model

• iOS/Android version

• Screenshot of the error

• Screenshot of Settings → Mobile Data / SIMs

• Your order ID

We will investigate and provide a replacement eSIM if needed.

🎉 Summary

The error “Unable to Complete Cellular Plan Change” usually appears due to:

• Weak Wi-Fi

• OS glitches

• Old configuration settings

• Conflicting data line settings

Almost all cases resolve with:

• Restart

• Airplane mode toggle

• Re-enabling the Figabytes line

• Updating OS

• Resetting APN or data settings

Your Figabytes eSIM should work smoothly once the cellular update completes.