1.Are There Any Minimum CPU requirement For Running Node?
1. AFAIK guideline from bitcoin.org mention CPU with 2 cores in past, but now it's removed. But as long as your CPU at least as fast CPU used on Raspberry PI, you'll be fine
I Plan To Run A Pruning Node From A Smartphone(Using ABCore), Is It Worth It?
And BTW How Much Bandwidth Is Used For RUNNING Node?
DON'T, you'll break your smartphone unless you can make sure it won't get too hot.
As for bandwidth,
https://bitcoin.org/en/full-node#minimum-requirements suggest at least 50 KB/s for upload.