Hopefully someone can offer some help for a semi-dead S4 mini. It doesn't seem like any other symptoms I've seen from searching.
It started when I was listening to music via the headphone jack, and the battery fully depleted and the phone shut off. I plugged in the power cord about 15 minutes later and there was no response from the phone. Never an issue charging before this.
When you hold the power button, the gray battery icon with fixed circle on it appears, and then goes away. There is no response from the phone when you plug in the power cord, no matter what it's plugged into. Used many combinations of cords, chargers, computer USB, etc, so it's not the source. When plugged into a computer that it previously interacted with, there is no response from either the phone or the computer. The same chargers/cords work fine on our Galaxy Tab 3's.
I checked and cleaned the USB port and it's fine. I've replaced the USB board inside the phone with a new one.
I've since purchased an external battery charger and another battery. All symptoms are the same no matter which battery. After charging the battery outside the phone, the phone will boot if you go into recovery mode and reboot. I've wiped the cache partition. When you select the wipe, it displays the android on its back and says ERROR but reboots itself successfully afterward. I've factory reset the phone from the recovery mode. I've done the *#9900# Low Battery Dump.
Once the battery is charged outside the phone, and you reboot from the recovery mode, the phone functions perfectly normal, and the battery lasts all day with normal activity.
So what the heck is wrong with this thing that it won't charge, won't recognize the USB port, and won't turn on normally from just simply running out of battery once!?
It started when I was listening to music via the headphone jack, and the battery fully depleted and the phone shut off. I plugged in the power cord about 15 minutes later and there was no response from the phone. Never an issue charging before this.
When you hold the power button, the gray battery icon with fixed circle on it appears, and then goes away. There is no response from the phone when you plug in the power cord, no matter what it's plugged into. Used many combinations of cords, chargers, computer USB, etc, so it's not the source. When plugged into a computer that it previously interacted with, there is no response from either the phone or the computer. The same chargers/cords work fine on our Galaxy Tab 3's.
I checked and cleaned the USB port and it's fine. I've replaced the USB board inside the phone with a new one.
I've since purchased an external battery charger and another battery. All symptoms are the same no matter which battery. After charging the battery outside the phone, the phone will boot if you go into recovery mode and reboot. I've wiped the cache partition. When you select the wipe, it displays the android on its back and says ERROR but reboots itself successfully afterward. I've factory reset the phone from the recovery mode. I've done the *#9900# Low Battery Dump.
Once the battery is charged outside the phone, and you reboot from the recovery mode, the phone functions perfectly normal, and the battery lasts all day with normal activity.
So what the heck is wrong with this thing that it won't charge, won't recognize the USB port, and won't turn on normally from just simply running out of battery once!?