In above diagram you can see Red, Blue & Black lines these are used in usb charging and usb data functions. Check USB charging jack if it have some carbon or rust then clean it with CTC and apply heat to make it Dry.
If USB charging jack of nokia asha 203 is damage or Replace it. If a few pins are missing then check all these tracks that are given in above Nokia asha 203 usb not charging diagram. If any print out of these is missing apply jumpers.
Check all these parts and if any of them is broken or damage apply jumpers. If jumpers can not solve usb data & charging problem of nokia asha 203 then replace these parts.
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