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micro sd card can fail i've had a few work on a pc but not the phone. 32gb one are more prone to do this. try a different sd card if it works then its down to the card it self if not read a know working one then somthing has hapend to the sd card reader. may have some muck in there stopping it working. or the board has faild.
Did you use a high capacity memory card with an old camera? For example, did you use a SDHC card in a somewhat old camera?
Some cameras accept only SD card. Although SDHC card has the same shape, it won't be reconized by the camera.
Once you have exceeded the maximum number of passcode attempts, the SIM will become locked and won't allow further attempts.
that happens you must obtain a PUK code (Personal Unblocking Key). This
can only be supplied by the network provider to the registered
If the SIM is a prepay credit SIM which has never
been registered with the network provider, then the PUK code cannot be
provided and the SIM card is useless. All data on it such as the phone
number, pre-paid credit and any contacts stored on it will be lost.
The telephone number of the SIM card is not necessary in order to generate a PUK code, but the SIM card serial number will be, and it is always printed on the SIM card.
Try using another SD card to see if that one will read. If so, there is a problem with your SD card. But if that card is also unable to be read, and your phone is fully updated, there is a problem with the reader on your HTC handset. You can contact HTC for a repair or a replacement. You might even have some luck at the retailer where you originally bought your phone. It's a fairly new model.
Here's HTC's number:
866-449-8358 6am-1am Eastern Time
wma files won't be read, only mp3 files, in my experience. My 512 mb SD card works, but it won't read my 8 gb SDHC card. I suspect it can't manage SDHC (high capacity) cards. I haven't tested yet, because as it turns out, neither can my computer... I think I'll fall back to a flash drive.