You carry them everyday, but just how heavy are the latest smartphones on the market? Here at Pocket-lint, we wondered just how much heavier the Nokia Lumia 920 is compared to the iPhone 5 or the Samsung Galaxy S3.\u00a0When you have a couple of grams here, or a few grams there, it is hard to actually compute that into something tangible.\u00a0To get a real grasp of weight sometimes you need to visualise it.\u00a0First we thought of butter, but if you haven't been watching the Great British Bake Off a pile of butter isn't going to be useful at all, but a pocketful of coins is.\u00a0The British pound (GBP) coin weighs 9.5 grams and is something most of us have in our pocket. It can also help us to assess different weights easily, because you just add or take away coins.\u00a0For this quick, very unscientific test we've gathered together the weights of the leading smartphones and then divided that number by 9.5. We told you it was simple.\u00a0So we don't get thrown in the clink for high treason if the end number is a point, we've simply rounded it up to the next pound coin. To make it fair we've done this for all the phones listed below. So in the case of the iPhone 5 that weighs 112 grams it becomes 12 coins rather than 11.78 coins.\u00a0So here are the top smartphones available in the UK as visualised by pound coins:The iPhone 5The Apple iPhone 5 (review)\u00a0is the lightest of the current batch of mainstream smartphones available and it weights 112g or 12 pound coins.\u00a0The Samsung Galaxy S3The\u00a0Samsung Galaxy S III (review)\u00a0weighs in at 133g or 14 pound coinsThe Nokia Lumia 920The flagship Windows Phone 8 phone, the\u00a0Nokia Lumia 920,\u00a0weighs in at 185g. That's 20 quid to you and me.\u00a0The HTC One X+The new One X+ Android flagship from HTC weighs in at 135g. That's 15 coins for those counting.\u00a0The HTC 8XHTC's Windows Phone 8 flagship smartphone, the\u00a0HTC 8X (review),\u00a0is considerably lighter than the Nokia Lumia 920. It weighs only 130g and that's the equivalent of 13.6 pound coins, or 14 coins to fit in with this visualisation.\u00a0The Nexus 4Want to go with the latest Android 4.2 rocking smartphone? Be prepared to make room for around 15 pound coins in your pocket if you opt for the\u00a0Nexus 4 (pictures and hands-on). Incidentally, it's the same as the HTC One X+The Samsung Galaxy Note 2It's one of the biggest smartphones, or should that be one of the smallest smartphones on the market, but the Samsung Galaxy Note 2 (review)\u00a0weighs in just less than the Lumia 920 at 183g. It's still 20 coins though.\u00a0iPad 4To give you a sense of how heavy your smartphone is compared to the iPad 4 (pictures and hands-on). It weighs 652 grams and that's the equivalent of putting 68 pound coins in your pocket. That's a lot of coins.\u00a0So how heavy is too heavy for you? Let us know in the comments below.