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Hello I got iPhone 7 Plus A1784 It has IMEI & Modem Firmware but “No Service” It even detects Network Provider. The iPhone activated with latest iOS. Please guide, how should I proceed to fix this iPhone? Board No. 820-00249-A Intel version Thanks!

The iPhone was previously with some repair guy, was tampered. Antennas were not connected, also charging flex needed replacement.

The iPhone 7+ Has 3G and 4G LTE. Even since Airtel is shutting down 3G you’ll get 4G LTE speeds. Try enabling LTE Go to Settings > Cellular. Then tap Cellular Data Options, then turn on Enable LTE.