what do i do if there is no enable lte setting under cellular there is only voice data and data roaming the 4g under voice and data does not even work phone only works in 3g nothing more what do i do to get the enable lte setting

Those settings are determined by your carrier and the carrier file on your device. Check with your carrier to ensure they support LTE and their carrier file has those settings. This support document provides instructions on how to check for carrier file updates. Update your carrier settings on your iPhone or iPad - Apple Support

you have toget insidethe cellular data networkanddoviarewrittenoptionalLTEconfigurationenterthe same as whatiswrittenaboveaboutcellular dataAPNreboot yourphoneand itall done🙂