On The Spot Mobile Repair Center

9 October 2026

Screen, Battery, or Charging Port? How to Tell What Your Phone Needs

Phone screen assembly ready for replacement

Screens, batteries, and charging ports are the three repairs we do most at our Emu Plains store. They're also easy to mix up. A phone that won't turn on could have a dead screen, a flat battery, or a blocked charging port. Here's how to narrow it down before you book.

Signs you need a screen repair

  • Cracked or shattered glass
  • Lines, flickering, or coloured patches on the display
  • Black spots or "ink" that spreads (common on OLED screens after a drop)
  • Touch that doesn't respond in some areas, or the phone tapping by itself
  • A black screen while the phone still rings, vibrates, or plays sound

That last one is the clue: if the phone is clearly on but you can't see anything, it's the screen, not the battery.

Signs you need a new battery

  • The battery drains much faster than it used to
  • The phone switches off at 20 or 30%
  • It only works while plugged in
  • It runs hot during light use
  • The screen or back is lifting from the frame (a swollen battery, so stop charging it and bring it in)

On an iPhone, check Settings > Battery > Battery Health. Below about 80% maximum capacity is a worn battery. On a Samsung, use the Samsung Members app and run the battery status test under Phone diagnostics.

Signs you need a charging port repair

  • The phone only charges at a certain angle
  • The cable feels loose or falls out
  • Charging starts and stops when you move the phone
  • Your computer or car doesn't recognise the phone

Most of the time it isn't broken at all. Pocket lint gets packed into the port and stops the cable seating fully. A professional clean and realignment from $39–$49 fixes most of these. Please don't dig at it with a pin, which can bend the contacts and turn a clean into a replacement.

Quick test: port or battery?

If your phone supports wireless charging, put it on a wireless charger. If it charges wirelessly but not with a cable, the battery is fine and the port needs attention. If it won't charge either way, it may be the battery or a deeper fault, and we'll test both.

Find your model

We have dedicated pages for every iPhone from the iPhone X to the iPhone 17 range, and for the Samsung Galaxy S, Note, Z Fold, Z Flip, and A series. Each page explains what's different about that model's screen, battery, and port. A few popular ones:

Or see all repairs by device.

Still not sure?

Bring it in. We'll diagnose it on the spot and confirm the price before any work starts, and with no fix, no fee, you don't pay if we can't fix it. We're at Shop 7, Lennox Village, Emu Plains, open seven days, and most screen, battery, and port repairs are done in under 30 minutes. Check prices and book or call 0420 739 151.

Check prices and book