... b, c, A, B, C, 23 key:d, e, f, D, E, F, 34 key:g, h, i, G, H ... (ABC On the LCD, meaning capital letters)3. Press 2key 3 times, C is ok;Then, press 6key ... times, N is okThen, press 3key 2 times, E is okThen, press 8key 1 time, T is okThen ... delete the last number(3) GPRS Port:1. In the sub-menu, press Up or Down key to ... the screen of order message, you can press Up or Down key to track the right order ...