The only possible explanation for the delayed or missing texts is either the phone or the SIM.
Now there are a few things you can try here:
1- When did this start happening? If you can remember think about any new apps or software you installed at this time. Try removing them to see if that helps.
2 - Power cycle every so often. Sometimes when your phone has been powered on for a long time (which is very common) it can get tired and need a rest. If you don’t power your phone off every few days for a few minutes then that might help your issue as well, and when I say power off I don’t just mean plugging it into the charger. Switch it off completely and leave it a minute.
3 - Soft reset. A soft reset is simply cutting all power from your phone, preferably for 10 or more seconds. If your phone allows you to remove the battery then go ahead and remove the battery from your mobile phone, count to 10, reinsert the battery and power the phone back on. If your phone isn’t designed to allow you to remove the battery than simply manually power your phone off count to ten and then turn it back on.
4 - SMS Clean-up. We have seen many text message issues related to this. Ensure you have a good rid out of any unwanted texts every so often.
5 - Reset your phone settings. This might sound a bit drastic but it can work. Be careful though. If you have a Samsung phone don't do it as it will re-lock your phone.
6 - Finally borrow a friends or family members unlocked phone. Pop your SIM into it and get a few of the affected people to text you. If the texts come through then we know it's a phone problem.
This might sound like a simple problem to fix but it can be quite difficult to pin down why it's happening.
Run through those tips and one of them should work. ~ Damian from 48
