iPhone 7 Memory Full & phone won't turn on
So apparently, my iPhone 7's memory is full.
This morning, I couldn't enter WhatsApp & I couldn't make any phone calls/search through any contacts.
I was still able to enter my photo app so I went in to delete some videos away which then I realised that those videos couldn't be deleted. I pressed delete but the videos were still there in my phone.
So I figured I should switch off my phone & on it again. When my phone got switched back on, I couldn't even go into my photo app & every other apps anymore.
Then I decided to switch it off & on it again but this time round, my phone can't be switched on anymore.
Apple logo keeps showing up & then it went off & it just keeps happening. I tried pressing down the lock & volume down buttons but it doesn't work too.
Please help me with this as I have all my stuff inside my phone & my iCloud only has backups till September 2019. My WhatsApp haven't been backed up since a long time too.