Are you stuck with a Huawei B535-232 router that refuses to accept a SIM card from a different network? You are not alone. Many network operators lock their devices to ensure customer loyalty, but this can be incredibly frustrating if you want to switch providers or use a local SIM card while traveling abroad.
A prompt will automatically appear saying "SIM Network Unlock PIN" or "Enter NP Code." Type in your 16-digit code carefully and click huawei b535-232 unlock code