My iPhone 5s has the software version build13E233 and the new update came with the other version build 13E236. Will this affect my phone's performance in future?
Pls help me in clearing my doubt
This will not affect your 5s. The new build 13E236 was released for older devices like the 5s that were not able to update to the original version. I'm on 13E233, you're device is fine.