Hi again everyone, I finally bought my new 8 plus 256gb. Got a yellow tinted screen. The reseller here in India does not consider that a defect. Anyways made peace with it. My new issue that I am facing with the device is regarding extreme battery drain overnight. I restored from a backup after updating to 11.2.1. Tested it for three days now. I charge it to 100 % at night and leave it on standby. By morning its at 55%. Could not decipher much from battery usage statistics. Next day I switched off the wifi and deleted Facebook and youtube, the common culprits. It was at 65% in the morning. Today I have reset all settings and will check again tonight. But my initial experience during the day is not very promising. Also I feel the drain while using it in the day is not too bad. It all happens when its on standby. Needless to say Background refresh has been off throughout. Mail is set to fetch manually. No automatic updates etc. location services off. Still the overnight drain. The thing is I used the same backup on my iphone X which I used for 3 days before selling it due to eye strain issues. It did not face the same battery drain. Also i normally get 3 to 4 bars of signal at my home but it is the same for my wife’s phone which performs ok. Also did not have this issue on my earlier iphone 6 at the same location but that was before ios 11. Maybe ios 11 did something. I did an OTA update before restoring. Is there a way I can reinstall a fresh ios copy via itunes and then restore from the same backup? Is it worth a shot? I am at a loss to understand this. Please share your ideas. Extremely disappointed with my experience with Apple this time round.