Mobile phones aren't all that mobile when it comes to switching carriers—or even owners. It may seem like a no-brainer to accept a hand-me-down phone from a friend or family member or buy a used ...

My best advice though is to go to trusted companies that buy old phones, refurbish them and sell them on. I've used MusicMagpie in the UK and had no problems. Its online catalog is vast ...

Buying a second-hand mobile phone can save you money and shop more sustainably ... You can get a great price on a second-hand phone, as the seller may not know how much their used handset is truly ...