If you've given someone an iOS or Android phone, or just received one yourself, you might come across a few terms in blogs and other tech sites that could use clarification. These online dictionaries for Apple and Android devices are great resources.
Both sites, run under the Smartphone Experts network, provide letter-by-letter explanation of terms that get tossed around a lot without explanation. OTA ("over the air"), "vanilla," UDIDs, ETFs—they're all clarified in these dictionaries, with links to the tag pages for each.
The Android Dictionary [Android Central]