IOS 11.0.1 and After Market ScreenOk so this issue came up for a lot of people with after market screens when upgrading to iOS 11. I never had the issue until ...
Answer to: Yellow color merges on the top screenA Yellow dot is typical on poor quality backlights on replaced screens. If you have not had a replacement screen and the screen you have is the original one another possibility is that if the phone has received a blow (typically from a drop ) it may well have created a small dent that has placed the screen under pressure thus in turn placing the backlight under slight pressure and that is showing through with a yellow patch. An easy way is just to connect a replacement screen but dont seat it back in place. Boot the iPhone and see if the yellow patch is gone if it has then power down and disconnect the battery and screen again. Then examine the housing any even tiny dents etc can cause the issue. If you dont have the tools to remove those dents its quite cheap to get a new housing
Answer to: amp meter low ampsI do a lot of iPhone repairs. Typically most iPhones being charged from a portable battery pack using either an Apple lightning cable or a MFI lightning cable will charge from 0.8 amp to 1.00 amp. This is a healthy range from a portable battery pack. If the iPhone is quite old and I see it charging below 0.7 amps 90 times out of 100 it means a new battery is needed as the old one has lost much of its capacity due to lots of recharging. This is easily confirmed using a Mac program called coconut battery. which shows how much of the original capacity of the battery has been lost. When I see the amps jumping around and I question the iPhone owner it usually turns out to be a history of cheap non MFI cables and chargers, the battery or the dock. In in some cases more than one of those. If you replace with good quality battery and dock and still have the issue of battery dropping fast then it could easily be the charging circuit having issues and not charging the battery correctly. One I had about 2 months ago was...
Answer to: iPhone no service, cleam imei, correct date, good antenna, so how?To connect the time and date must be set correctly but otherwise it will be a logic board issue. there are several small components that if damaged will prevent connection. check all parts around the battery connector for continuity the smaller components are related to network connections.