Why does Google Play Store say that Adobe Air is incompatible with the Huawei U8510 phone?
Your device doesn't have an Armv7 processor.

It has an Armv6. You can confirm this by attempting to download apps like Temple Run &amp; Firefox from the market - these all need Armv7 processors. You can also install Device Info to check it yourself, it gives you detailed information.

Also, according to GSM Arena your processor is clocked to 600Mhz - the same as most Armv6 devices.