Originally Posted by htcexplorer
Its right there, where its written htc (above the screen)..if you are still unable to find it..keep it under a light source (lamp, bulb, etc) screen facing up and look to the right of htc (written in white, above the screen) logo..there you will see two small holes..actually those are the hollow cut-outs for ambient light sensor and proximity sensor..you are supposed to cover these small holes with your finger..
If you are still not getting it..then there's another way also..unlock your phone, set screen timeout to "Never turn off"..draw all curtains of your room..turn off the lights..the idea is to make it kinda dark room..and observe the screen brightness..it should dim gradually..now turn on the lights and see if again screen brightness increases or not..
If the screen brightness does not change at all then you should take it to HTC's service center..and if screen brightness changes but still the touch button lights do not light up while it was dark, then you might be having faulty touch button lights..in that case also you'll have to pay a visit to HTC service center..
Hope it helps..
There you are thanks yes i can see the two small box it works me as for now thanks for kind help