3 ms·About 12% larger capacity. Not enough of an improvement to eliminate this problem.by droidno9 6y agoAbout 12% larger capacity. Not enough of an improvement to eliminate this problem.Exmoor 6y agoThe 4a also uses a lower power SOC and a 60hz screen, which is likely to make a more substantial difference.what_ever 6y ago60hz screen at lower resolution as well.