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 64–72
Use & troubleshootingUSB-C laptop charging: check Power Delivery and wattage
A USB-C shape alone cannot tell you whether a cable or charger can power a laptop. Check the port, adapter and shared power budget.
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Use & troubleshootingUpdating iOS on a used iPhone: backup, space and power
Before tapping Update, check model support, a completed backup, free space and a stable connection. Know what to do if an update is missing.
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Use & troubleshootingUsing Samsung DeX on a used Galaxy S23: what you need
DeX can extend a phone to a larger screen, but test your monitor, cable, keyboard and essential apps before relying on it for work.
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Use & troubleshootingSoldered RAM or a SODIMM slot: check before buying
Not every laptop can gain more RAM later. Read the exact model, memory type, slot count and likely future workload before choosing.
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Use & troubleshootingBuying a laptop for video calls? Test its webcam and mic
A short test call reveals more than a camera resolution label. Check image, sound, lighting and access permissions on the actual laptop.
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Use & troubleshootingWireless charging on a used phone: check MagSafe and Qi
The pad, case and placement all matter. Test wireless charging on a used iPhone or Galaxy with the accessories you will actually use.
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Use & troubleshootingMoving from Android to a used iPhone: what to prepare
Moving phones involves more than photos and contacts. Check the used iPhone, use Move to iOS at the right stage and plan account sign-ins.
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Use & troubleshootingLaptop Full HD 16:9 or WUXGA 16:10: which fits your work?
At the same 1,920-pixel width, WUXGA adds vertical space for documents and spreadsheets. Still compare size, scaling and brightness.
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Use & troubleshootingDo you need a 120Hz laptop for study and office work?
120Hz can smooth motion, but brightness, aspect ratio and keyboard comfort may matter more during a full day of documents.
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TECHBUY can help you choose the right device for your real needs and budget.