Chosen Solution

Just simply has no power. I disconnected the battery cable and plugged the pghone into my computer but no apple logo flashing. No signs of power at all. Could rthis still be a bad battery?

I would most certainly replace the battery. 9/10 you will get some kind of life. Here is a link to the battery. Jonny

If the screen has just been replaced it could be a number of things Battery or faulty screen

i have an iphone 5c and i was putting on credit then it has been saying please wait for a long time so i pressed the on and off button for a long time then it turned off and would not turn on back so i dont know what to do and the battery was at about 94 percent