Chosen Solution
I followed the guide step by step and when I assembled it all back the screen now flickers at the bottom edges. Is this the screen of a ribbon issue?
yes. disconnect battery and reseat LCD connector and be sure ribbon cable is not bent. Reconnect battery. Turn off auto-brightness. Hard reset If this still doesn’t solve, it is damaged LCD connector. jessa
Hello. Yesterday I was in an independent repair shop and my iPhone 5S screen was flickering heavily after battery replacement, but the shopkeeper said that it will disappear after cca. 10-15 minutes so I waited in the shop and the issue resolved itself while I’m tested the phone functions with TestMHardware App from Apple AppStore and no more flickering happened after cca. 10-15 minutes.
