New unit costs 699, if I were you, I will buy one to replace it rather than repair or consider ZF6. 720 screen is no match for 1080 screen plus you have spare stylus, earphone, battery and charger.

Phone prices are constantly dropping. So it makes sense to shop around especially if the model has been in the market for more than 1yr.
If you can find use those round edged tempered glass screen protector. Very good user experience.