What is the difference between 3G, 4G, GPRS, E and Wi-Fi We all know that the little blobs or bars in the top-left corner of our smartphone displays indicate the level of signal strength we have when making a phone call. But what are the cryptic letters that are seen next to them? What is GPRS, E, 3G and 4G on the iPhone, Android or Windows Phone? GPRS, E, 3G and 4G are all indicators of signal strength for downloading and uploading data to your smartphone – for browsing the web, sending/receiving emails, watching videos, etc....

Asus ProArt PA279Q review Expert’s Rating Our Verdict Although 24-inch 1080p IPS displays are now available under £200, good-quality 27-inch Consumer panels are still a fair bit more expensive. Therefore there’s not too much of a price difference between those screens and the Asus PA279Q. For the extra outlay you get a display with excellent colour accuracy, a wide range of inputs and a well-designed and highly usable menu system. Brightness, delta-E figures and contrast ratio were well within acceptable limits....

Create image backup of USB drive How to easily create exact image copies of anyUSB flash drivesand store them on yourPCorlaptop. PLUS: how to quickly and easily create multiple copies of a USB flash drive. (See also:Recover deleted files for free: recover lost data.) If you have a lot of USB flash drives, it can sometimes become difficult to keep track of what you have on each one. Also, some USB flash drive setups can take some time and effort to create, such as bootable ones for installing operating systems or running live distributions such as Ubuntu....

HTC One M8 vs Google Nexus 5 comparison review Our Verdict If value is more important than anything else, the Nexus 5 wins hands-down. If it isn’t, you won’t be disappointed with the HTC One M8, apart from perhaps the hit and miss Duo Camera. You’re spoiled for choice when it comes to qualityAndroid smartphones. Here we compare the newHTC One M8with the Google Nexus 5and tell you which one to buy....

Share a laptop and keep data safe Want to share aPCorlaptopwith a flatmate? Kids use your PC and you want to keep them away from important files and folders? Here’s how to share a PC or laptop and keep your data safe. QUESTION Can anyone advise how I can password protect particular files on my laptop so I can share my laptop with a flatmate for internet access only? HELPROOM ANSWER It’s possible to encrypt individual files and folders in Windows, but these are automatically decrypted as required, without the need for a password, once you have logged in....