Looking to trade-in an older device for a new iPhone 6s or 6s Plus? Our friends at price comparison websites CompareMyMobile (UK) and GadgetValuer (US) hooked us up with some data that may come in handy. First off, any doubters among you must consider that the time to trade in an old iPhone is now, for iPhone trade-in prices are set to drop by up to 37.5% within two months of the iPhone 6s & 6s Plus’ reveal. This is due to recyclers reducing offers as to deal with the number of devices being sent to them. Thus, act swiftly and you may be able to get up to £445/$441 for an old iPhone if you’re lucky!

Want some more advice? US customers must consider whether they should unlock their phones or not prior to selling or trading them in, a topic that we’ve touched upon in the past. According to the most recent data, consumers could earn as much as $130 more by unlocking their iPhone 6 16GB, or up to $55 more for an unlocked iPhone 5 16GB, as long as the phone isn’t locked to Verizon – in which case, you’re better off keeping it locked and throwing away the key!

UK customers, meanwhile, should compare offers by the various recycling companies running on the island, as it turns out they could potentially earn up to £62.50 more by comparing iPhone 6 prices online, up to £52.10 more for iPhone 5s prices, and up to £43.40 for the iPhone 5.

In the graphics below, you can see illustrations of top trade-in prices on CompareMyMobile and GadgetValuer, and price differences (locked & unlocked) for US consumers and UK recyclers.