QUOTE(dikae @ Dec 23 2017, 12:34 AM)
Can't downgrade coz older iOS are not signed anymore...why it cannot be used anymore?
QUOTE(huislaw @ Dec 23 2017, 08:20 AM)
Try use iTunes to do a clean restore?
QUOTE(Yen8on3 @ Dec 24 2017, 07:31 AM)
Check the level of wear on your battery life with is
APP (Battery Life)The battery wear and new software updates from Apple might be draining or slowing the performance.
guys, i found a solution from my cousin, just do a reset setting via your shitty apple phone, and the sluggishness will disappear. Works well for me now, i can see like 10-30% performance drop from 10.3.3, but hey at least its usable now instead of being an overpriced shit phone.