I recently broke my pixel screen, and during the replacement I saw no reason to leave it on the charger, uselessly...

I'm replacing my Google Pixel screen, and Amazon recommended I get "Eco-Fused adhesive sticker tape, 2mm". The tape works...

With the iPhone 5s, it's common to accidentally damage the front camera flex cable, especially if you didn't completely remove the screen during the battery replacement. Another common thing to check is the home button connector, if either of these things isn't fully connected, it will cause the phone to bootloop. I work in a cell phone repair shop and can understand the frustration of changing a battery and then finding the phone no longer turns on properly. We encounter this pretty commonly, and the good news is that it's rarely unrepairable.

Discovered the answer. Li-ion batteries hold a charge between 3.6 volts and 4.4 volts (or so, it varies by phone model), and in that range is your 0-100% battery life. There is a "cutoff voltage" point where the battery just doesn't have enough power to push energy to the entire motherboard, and at that point it encounters a hard shutoff. This is around 3.6-3.5 volts. Unfortunately, the lower your phone's voltage is, the faster it can drop under use. From 4.4-4.3 volts takes maybe 20% of your battery, but 3.6-3.5 only takes 5%. An interesting phenomenon is that, when you leave your phone in a state of drain, not charging it for a time after it shuts off on it's own, the battery will continue to drain slowly due to it's nature as an always-connected component in all modern smartphones. So over time, over a week or month or whatnot, that battery can drain down to somewhere around 2.5 volts, when it doesn't even have enough push to reach the first component, the power regulator chip, on the motherboard. Some...

I've had this issue myself, and what seemed to be my issue was the phone simple going to sleep after a lack of use, and locking itself. That would also drop the connection. I made my home a location-based unlock area, and I didn't encounter the issue again. You could temporarily set the security options to "lock after 30 minutes" or something similar, until the transfer has finished. That may help.