I know that many colleagues use their mobile phone camera when taking photos of crops and diseases in the field. And that makes sense considering that you always have your phone with you!! Many colleagues are, like myself, pretty amateurish at taking photos and so all the help you can get makes a big difference. Most companies (and individuals) change their mobile phones on an infrequent but regular basis – perhaps every two of three years. I am, and have been for over thirty years, an avid Apple follower/user despite being forced to use Windows PCs and Blackberrys during those years. Dual lens phone cameras have been available on the iPhone, and non-Apple products, for a few years now but their advantage, in terms of maximising on the focal length, depth of field etc has never really been discussed very much. Indeed, unless you have used the iPhone Plus versions, considered by many as being too big (except those getting on in years needing the larger screen), dual lenses have not been an option. Last year, 2017, was the first exception as the iPhone X, not being a Plus size, was the first non-Plus with dual lenses.
This year the new iPhone XS and XS Max both have dual lenses, while the iPhone XR will (when released in October) will only sport a single wide angle lens. Reports, marketing speak of the new “neural engine” in the “Bionic A12 chip”, translating to separate chips on the A12 processor with designated tasks, may in reality offer real improvements for us amateurs in taking usable field photos. While I don’t have first-hand experience with this, there are a slew of on-line reviews of the XS and XR Max including this one from John Grubber.
All-in-all it might be a good reason to upgrade your phone!! But I also would like a new iPad (reportedly to be introduced at an event in October), a new MacBook Pro (but I can hold off as the keyboards are still problematic) and a new Mac mini (to replace my Mac mini 2012 server which has been running 24/7 since 2012).