Troubleshooting Phone Problems
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Screen damage is probably the most common reason phones are brought in for repair. 

Sometimes the event that precipitated the glass to break (or maybe the glass didn't break but the screen is black) caused unseen damage beyond the screen assembly itself affecting other functions or preventing a new screen from working.  In such cases the unseen damage will need to be repaired before a new screen replacement will revive your device.

The proximity sensor is usually only damaged as a result of screen breakage due to its being directly behind the glass. 

More display and touch screen related problems:

Screen is freezing or getting stuck

• Touchscreen digitizer is damaged
• Software corruption
• Logic board damage

You plug in your device to charge - no beep, no charging indicator - you think: "oh no I need the charging port replaced".  

Often it is that simple, however the charging port is related to other functions and components like the battery and mainboard charging circuits.

We look at all possible scenarios when diagnosing a faulty port and provide the solution(s) that solve your charging problems!

Battery problems come in different flavours.

Often it is easy to know when your battery needs replacing - most devices will give you a message leading up to it.  

When replacing the battery isn't a solution or only partially improves the functionality - we will need to to look deeper.

Power button issues may make it difficult - or even impossible - to turn your phone one or off. 

A stuck power button may make your phone appear to be stuck in a boot loop.

Most phones come with at least 2 cameras (front camera for selfies or video calls and back camera for hi-res photos and videos).

Different camera problems may have different causes and/or solutions.  

Earpiece issues interfere with your ability to hear the other party when on a call - unless you switch to speakerphone.

Often a straightforward replacement of the earpiece speaker will solve this problem. 

Sometimes (and depending on the nature of the damage be in water or impact or ...) the problem could run deeper.

We have even seen (though rarely) software to be the culprit of earpiece problems - especially in the absence of an apparent damage. 

Headphone jack problems are usually easy to identify and are rarely caused by deeper issues.  However for those few cases where it is not the jack itself here are the possibilities:

Loudspeaker problems are generally part-focused - meaning the problem usually lies in the speaker itself. In rare instances there may be an underlying or secondary issue.

"Hello?" ... "hello?" ... when you're calling party can't hear you your microphone may have a problem.  The mic on a phone may be integrated into the logic board or may be a component itself.

WiFi problems? Don't run up your data bill - get your WiFi connection fixed ASAP!

Bluetooth is vitally important to many people these days - to onnect to your earphones, wireless speakers and your car.

Hit and miss communications - "can you hear me now?" - a damaged cellular antenna will be sure to keep you mostly offline.

With a SIM tray problem your phone isn't much use as a PHONE !  You won't be able to make or receive calls and text messages and data won't work.

On models that have it - possibly the the single most important control!

You've gotta be able to crank it up - (or turn it down) -- volume control frustration relief is a 1 hour visit to TechKnow Space!

Instant silence at the flip of a switch. Your mute button immediately silences the ringer giving you privacy when you need it.