I have been using an OTG adapter to my Samsung Galaxy Nexus (4.2.1) for a long time without problems. I use(d) it to control my Nikon dslr with Helicon Remote app. Two days ago, it just did not connect. The app did not detect any camera. This is what I did to troubleshoot : - connect camera with the same usb cable (without OTG) to a laptop with dslr software : no problem - connect a pc mouse to the phone OTG adapter : mouse worked fine on phone - changed to 3 different OTG adapters : same problem - factory reset camera : same problem - factory reset phone and restored all apps : same problem - factory reset phone without apps, tested to connect OTG and dslr (and waited for a popup question "what app to use") but nothing happened. I am thinking of buying another phone... Can you think of something else ?