If your phone has signal but shows a "Wi-Fi NVRAM Warning: ERR 0x10" in the Wi-Fi settings, you can often fix this with a manual file replacement if your device is rooted:
NVRAM corruption on the Vivo Y83 is a frustrating but entirely solvable problem. By correctly identifying your device model, verifying the symptoms, and following the step‑by‑step methods in this guide—starting with network resets and recovery mode operations, then progressing to NVRAM‑specific repairs—you can restore full calling, Wi‑Fi, and Bluetooth functionality to your phone. vivo y83 nvram file fix
Click on the button next to the Scatter-loading File field. If your phone has signal but shows a