HTC (2498) unveiled its “First” smartphone at Facebook’s (FB) press event in California on Thursday. The mid-range handset, which will be exclusively available from AT&T on April 12th for $99, sports mediocre specs and comes preloaded with Facebook Home, a new software suite for Android smartphones. According to developer and HTC insider LlabTooFeR, the company may release the HTC First to other carriers without the special Facebook Home integration. The Home-less handset, codenamed M4, is reportedly equipped with a 4.3-inch 720p HD display, a 1.2GHz Snapdragon 400 processor and an “Ultrapixel” rear camera. The device also includes 16GB of internal storage, 1GB of RAM and Sense 5 atop Android 4.2.2, rather than the Facebook Home skin. Earlier rumors suggested that the M4 would launch sometime this spring.