eSIM Not Working in China: Troubleshooting Guide

eSIM from 1,00 USD · 100 MB. Networks: China Mobile (5G), China Unicom (5G).

eSIM not connecting: step-by-step fixes

These steps fix 90% of eSIM connection problems. Work through them in order.

1. Check the basics:
   • Is the eSIM line active? (Settings → Mobile Data → it should show as active)
   • Is that line selected for "Mobile Data"?
   • Is "Data Roaming" enabled for that line?
2. Aeroplane Mode: enable for 10 seconds, then disable. This forces your phone to search for a network again.
3. Restart your phone: full power-off and on. Fixes most network registration issues.
4. Manual network selection:
   • iPhone: Settings → Mobile Data → your eSIM → Network Selection → turn off Automatic → pick a network manually.
   • Android: Settings → Network → SIMs → your eSIM → Network Operators → Search manually.
5. Check the APN:
   • The correct APN is usually in your order confirmation email. If it's missing: Settings → Mobile Data → your eSIM → Mobile Data Network → enter the APN manually.
   • iPhone tip: sometimes you need to "Reset Network Settings" (Settings → General → Transfer or Reset → Reset → Reset Network Settings).
6. If nothing works: contact your eSIM provider's support with your ICCID / order number. Rare, but sometimes the profile needs to be reactivated on their end.

Quick checklist: stay online without surprises

The make-or-break moment is often the first 30 minutes after landing: maps, transport, messages. Install your eSIM on Wi‑Fi before you travel and switch mobile data to the eSIM when you arrive. That way you're not dependent on airport Wi‑Fi and you avoid accidental roaming charges.

For typical use (maps + messaging + light social media), 1–3 GB per week is often enough. If you tether for a laptop, take video calls, or stream daily, aim for 10 GB+ or a plan with fair-use throttling instead of a hard cut-off.

• Networks: China Mobile (5G), China Unicom (5G)
• Offline maps: download the area in Baidu Maps, Apple Maps (offline downloads work), MAPS.ME (offline) while you're on hotel Wi‑Fi.
• On the move: DiDi, Meituan taxi + WeChat, Line (may need VPN) work well on low data — video and app updates are usually the real data drains.
• Common weak spots: Tibet Plateau and high-altitude Sichuan roads · Remote karst mountains in Guangxi (Guilin countryside)
• City context: Beijing: Excellent coverage; Great Wall tourist sections have 4G. · Shanghai: World-class 5G coverage; Metro line LTE on most lines.

Phone setup tip: keep your primary SIM active for calls/SMS (so 2FA codes can arrive), but turn off mobile data on that line. Set the eSIM as your data line — it prevents accidental roaming on the wrong SIM and keeps WhatsApp/banking flows more predictable.

Current eSIM plans (examples)

Examples from our database — availability and pricing can change.