Use & troubleshooting
Practical laptop, phone and PC guides: troubleshoot common problems, protect your data and maintain your devices with clear checks and steps.
Use & troubleshooting
Use & troubleshooting: 87 matching articles · Showing 73–81
Use & troubleshootingExternal monitor for a laptop: check HDMI and USB-C first
A USB-C socket does not automatically support video or charging. Read the port specs, choose a cable and test the display before buying.
Read article
Use & troubleshootingA used phone has IP68: should you test it with water?
IP68 comes from controlled testing of a model, not a guarantee that an individual used phone still has its original seals.
Read article
Use & troubleshootingUsed OLED phone screen: check tint and image retention
A few backgrounds and touch checks reveal problems that matter in use, without turning a used-phone inspection into an extreme pixel hunt.
Read article
Use & troubleshootingNew laptop delivery: what to check in the first 15 minutes
A practical handover order: confirm the exact configuration, then test the display, keyboard, charging, connections and warranty details.
Read article
Use & troubleshootingLaptop SSD: do you need 512GB or 1TB?
Estimate storage from real apps, photos, video and projects. Learn when a built-in 1TB drive beats 512GB plus external storage.
Read article
Use & troubleshootingBuying a used Galaxy S23: check display, cameras and accounts
A practical handover checklist for a used Galaxy S23: account removal, 120Hz display, three cameras, connections and battery.
Read article
Use & troubleshootingUsed iPhone 15 Pro: eSIM or physical SIM?
Regional models determine the SIM tray; your carrier, travel and phone-switching habits determine what works. Check the exact used unit.
Read article
Use & troubleshootingLaptop screens: what do 45% NTSC and 100% sRGB change?
Colour gamut matters for editing photos and web content, but it does not guarantee accuracy. Read the specs and test a screen sensibly.
Read article
Use & troubleshootingiPhone 16 Camera Control and Action button: what changes?
The two controls do different jobs. Learn when they save time, how to test them on a used phone and when they are not worth paying extra for.
Read articleNot sure which configuration to choose?
TECHBUY can help you choose the right device for your real needs and budget.