None is required, you are using 128GB, no need clear cache also. Just let it be. If you really really feel too junk already, Everytime connect to iTunes for backup, it will auto clear the cache. But for 128GB, really no point to do such thing. iOS is very well in memory management control.

Unless you using 32GB then probably need as you may run out of space. For 128GB, it is unnecessary.

Ordering rhinoshield playproof case for ip7+. Any suggestion full covered tempered glass that compatible with the case? Thanks

from their official site as I want custom case.

25.90 usd after 15% discount.

High graphics games do take a burden on the processors which accounts for the extra heat generated. Does your phone cool down when not playing? Mine also gets hot by just playing boom beach. There shouldn't be cause for concern. R u using a case? Some cases don't really dissipate heat very well.