1. Preparation Before Traveling
- Keep only one domestic eSIM active before departure.
- Obtain your QR code from a trusted eSIM provider in advance.
- Keep APN/manual setup info ready in case automatic activation fails.
2. Known Limitations
| Status | Can Add Overseas eSIM? | Note |
|---|---|---|
| One domestic eSIM active | ✅ Yes | Recommended for smooth operation |
| Two domestic eSIMs active | ❌ No | Remove one before adding overseas plan |
| Frequent re-writes in same month | ⚠️ May be restricted | Limited by carrier policy |
3. Activation Steps
- Go to Settings › Cellular › Add eSIM, scan your QR code.
- Upon arrival, enable Mobile Data and Data Roaming.
- If no signal, set APN manually, toggle Airplane Mode, or reboot.
4. Key Precautions
- Before Reset: Always choose “Keep eSIMs”.
- Deleting ≠ Canceling: Removing eSIM doesn’t terminate the line; official deactivation requires carrier visit.
- Data Routing: Use travel eSIM only for cellular data to avoid conflicts.
5. After Returning to China
- Keep your domestic eSIM and disable the travel one when home.
- To re-activate a second domestic eSIM, visit carrier office (monthly limit applies).
6. Practical Tip
For frequent travelers, using one domestic + one travel eSIM is the most stable setup.
Get your travel eSIM here: esimkitstore.com