Hello there, SP Mahopo.
It sounds like you're having charging issues with two iPhones. Although you may have tried some of these recommendations, the following Knowledge Base article offers some good instruction on troubleshooting further:
If you can’t charge your iPhone, iPad, or iPod touch
Make sure you’re using Apple-certified accessories and the right power source.
If your battery is really low, you might see a black screen for a few minutes even after you plug it in. Let it charge for at least 10 minutes (20 minutes for iPad). If it still doesn’t charge, follow the steps below.
If the battery doesn’t charge, unplug your device and try these steps:
- Look at the connector at the bottom of your device and make sure it’s free of debris.
- If you're using a USB power adapter, make sure it's plugged in all the way and the power outlet is working. If you're connecting to a computer, make sure it's on and can charge your device. To charge an iPad, you might need to use a USB power adapter and plug into a power outlet.
- Try a different USB cable, USB power adapter, or USB port.
- If everything seems to be working, reconnect your device and wait for 30 minutes.
If your device still doesn’t charge, try to restart it while it's connected to power. If you can't restart, force your device to restart.
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If your device still doesn't charge or you still see an alert after trying the steps above, contact Apple Support.
Thanks for reaching out to Apple Support Communities.
Cheers.