A: Network unlocking should not affect your device's performance. However, installing custom firmware may have an impact on performance, battery life, and stability.
| Error Message | Probable Cause | Resolution | |---------------|----------------|-------------| | "Invalid Code" | Wrong code entered or code expired | Wait 24h (counter resets), obtain new code from different source. | | "Code Entry Limit Exceeded" | Too many failed attempts (usually 5-10) | Leave phone on idle with original SIM for 24-48 hours. | | "Network Lock: Not Allowed" | Device is blacklisted or unpaid | Contact original carrier to resolve financial hold. | | No prompt after inserting foreign SIM | SIM incompatible (e.g., CDMA-only SIM) | Use an active GSM SIM (T-Mobile, AT&T, or international). | zte z2335l network unlock install