Physical & water damage

Swollen battery bulge

A visible bulge under the screen or back panel is a swollen lithium battery, which is a genuine safety hazard and should be handled carefully.

Difficulty
Professional only
Time
Same-day drop-off recommended
DIY cost
$0
Pro cost
$40–$120 for battery replacement

Symptoms

  • Screen or back panel appears to be lifting or pushed outward
  • Phone doesn't sit flat on a table
  • Case fits tighter than before
  • Phone may feel warm even when idle

Likely causes

  • CommonBattery aging and naturally expandingLithium batteries can swell as they degrade, especially after 2–3+ years of use.
  • CommonRepeated exposure to heat, like a hot carHeat accelerates battery degradation and swelling.
  • PossiblePhysical damage to the battery from a dropA dented or punctured battery cell can swell rapidly.

What to do

  1. Stop using and stop charging the phone immediately.
  2. Do not press, puncture, bend, or try to pop the panel back down.
  3. Place the phone in a fireproof or non-flammable area (like a metal tin or outdoors, away from flammable materials) as a precaution.
  4. Do not put it in water or a freezer — this does not make it safer.
  5. Take it to a battery recycling drop-off or a professional repair shop the same day for safe removal.

When to call a pro

Take the phone to a repair shop or battery recycling center the same day; do not attempt to remove a swollen battery yourself.

Safety

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.