iphone 5 Text Messaging not reliable

Do Apple Techs ever read these forums? My wife and I have the iPhone 5 with Sprint service, Text msgs are very unreliable, sometimes taking 8 hours to be delivered. Sometimes they don't send. We both had the HTC EVO with Sprint and never had a problem texting, ever! I have tried all the different setting from other folks havving similar problems. I might as well have an Ipod, since the phone functions are POOR at best. BTW this is my 4th iPhone replacement since Sep 2012. I should have went with the Samsung Gallaxy III. Unless Apple gets the problem corrected, this will be my last iPhone. Granted Apple has great service and all 4 phones were replaced without any problems, but great customer service is a poor substituite for equipment functionallity and lost user productivity.

As a side note: Network settings have to be reset everytime I go from 3G to 4G LTE service areas and back, Sometimes when Wi-Fi is used it has to be reset. Wi FI doesn't connect automatically most of the time. Other than those irritating items the iPhone 5 makes a nce paperweight.