Why?
iPhone SE, iOS 14
If you have not had at the battery replaced, and this is the 1st Generation SE, something has gone wrong with your battery. Click on the Get Support link at the top right of this page to start the service process.
As suggested in the link you came here from did you go to Settings > Battery > Battery Health? What is the percentage shown?
Who replaced the battery?
No one.. i bought is about 6 months ago
How long have you owned this device?
There is no way the original battery that came with the device could still be 100%.
2nd generation se
If it is a 2nd Generation and it is doing this something has failed. Use your warranty and follow the previous instructions I provided.
Six months
Phone is shutting down when it still has full battery
