iPhone 5s not coming on
Iphone 5s, after i lent my charger to my aunt my phone refused to charge...it would charge to 3% / 4% would not charge any further . then when i try to use it the screen flickered on and off then died. thinking that it was a battery failure i replaced the battery and i have not gotten it to turn on since. im a cellular tech and tried everything in my power now im asking for advise.
The only thing i haven't tried is ordering a brand new batter/charging port or a new charger.
can anyone advise me on whats going on or what caused this i would appreciate it