ZDNET's key takeaways Use these codes to forward calls, pay your bill, check balances, etc.Some of the codes work only on ...

Switching to a new cell phone service provider can save you hundreds of dollars per year—and there’s no need to ditch your current phone to do so. To make the move, though, you may have to first ...

If you want to take your Galaxy S10 and use it on any carrier network, you’ll have to do a SIM unlock first. In this guide we’ll explain how to SIM unlock the Galaxy S10 or Galaxy S10+ and why you’d ...

This quick guide will explain the many different ways to SIM unlock your Galaxy S7 or Galaxy S7 Edge. Whether it’s to use it on another carrier with a lower monthly bill, international use, or to sell ...

There are a lot of great smartphones on the market right now, but it’s hard to find one that’s more well-rounded than the Samsung Galaxy S9 and its larger brother, the S9+. Both are packed with great ...

Think you’ve explored every inch of your Android phone? Think again. Beneath the familiar icons and settings lies a world of ...

Major cellular carriers — Verizon, AT&T, T-Mobile, Sprint, and others — typically lock their networks to the iPhone you buy from their stores or pay for via an installment plan. What does that really ...

Until recently, if you wanted to unlock your phone in order to switch carriers, there was a good chance that you’d have to do it without the cooperation of the carrier you were with. You could search ...

Is my O2 phone already unlocked? The good news is that if you have bought a phone from O2 recently, it may already be unlocked. Any Apple devices bought since August 1, 2018, will be unlocked. All new ...

To be successful in a competitive marketplace, you must generate ongoing revenue for your business, and you must also reduce costs whenever possible. If you have a Vodafone USB modem you use for a ...

Think you’ve uncovered every last secret your Android phone has to offer? Think again! Hidden just beneath the surface, your device holds a treasure trove ...