Apple not supporting 4G LTE in Bangladesh :(
4G LTE enrolled all over the county in Bangladesh on 19th -20th February 2018. But only Apple user facing problem to use this high-speed service. All city is now covered by 4G / LTE service as well. Each and every 4G / LTE enabled device running very smooth with better speed and signals but iPhone users are only in the problem. Bangladeshi mobile operators providing LTE Band 1(2100 MHz), 3 (1800 MHz) and 8 (900 MHz). Ihave talked to the operator's IT specialist and they said,"Apple authorities should update the 4G / LTE network security patch. Ones they will update the patch every 4G / LTE enabled iPhone user will able to use 4G / LTE facility."
So, we are just eagerly waiting for the update.
Reference: http://www.thedailystar.net/business/4g-internet-in-bangladesh-spectrum-auction- be-less-competitive-1530598.
Thank you
iPhone 6s, iOS 11.2.6, null