If your iPhone 15 Plus is randomly rebooting or the back glass looks slightly lifted, a swollen battery could be the cause.
We recently had a customer bring in an iPhone 15 Plus that was:
Randomly restarting Feeling thicker than normal Showing visible separation along the back glass
After opening the device, we confirmed the battery was swollen and pushing against the internal frame and rear housing.

Swollen iPhone 15 Plus battery expanding inside the device.
Why Do iPhone Batteries Swell?
Lithium-ion batteries can swell due to:
Age and chemical degradation Heat exposure Charging habits Internal battery failure
When a battery expands, it puts pressure on the display or back glass. In this case, it was lifting the rear housing and causing instability that led to unexpected reboots.
Ignoring a swollen battery can:
Damage internal components Crack the back glass Increase fire risk Lead to complete device failure

Damaged iPhone 15 Plus battery removed from the device.
The Repair Process
We removed the swollen battery and installed a tested replacement battery from a compatible device.
After replacement:
The phone sat flush again Random restarts stopped The back glass aligned properly
You can clearly see in the before-and-after photos how the device went from raised and separated to properly sealed and flush.
Signs You May Need a Battery Replacement
Phone randomly restarts Screen or back glass lifting Battery drains quickly Phone feels warm frequently Device feels slightly thicker
If you notice any of these symptoms, it’s best to have it checked early.
iPhone 15 Plus Battery Replacement in Commerce City
At Phone RepairZ, we provide professional iPhone battery replacements in Commerce City and serve customers from Denver and surrounding areas.
Most battery replacements are completed same day.

iPhone 15 Plus sitting flush after battery replacement in Commerce City.
📍 Phone RepairZ
6344 Ivy St
Commerce City, CO 80022
📞 (720) 427-6422
You can also request a repair here:
👉 https://phonerepairz.co/book/
