Problem with xperia j

[jijo]

i bought my xperia j 5 months before, now it has a problem with network. its showing no service.. no network found when i put any sim in it and thus i cant use it. there is always showing a red cross mark on the range signal.

[Cot88]

Check if other antennas (GPS, Wifi) work correctly

Try to boot your phone in safe mode and check if issue is the same

• Turn off the device.
• Press and hold down the power key  until the phone vibrates.
• Wait until the Xperia™ logotype disappears.
• Press and hold the volume down key. The device then restarts in safe mode.
• To exit safe mode, restart the device.
  Do a data backup and reset unit to factory condition
  If issue is the same with any SIM that worked correctly before go to the nearest Sony service center