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So about a month or two ago I replaced the screen and the battery on my iPhone X. All was great until I started to notice when I was bout and about randomly it would loose all Cellular connectivity. I tried to rest network config Updating to last IOS Selecting automatic network selection to manual. Ordered a replaced sim However nothing fixed it, in the end I have had to buy an iPhone 11 to replace it. My next step is to try to replace the antenna. However there is conflicting information online as to where the antenna is. Apparently the phone uses MIMO and has multiple antennas. I would like to replace all the Cellular antennas does anyone know where they all are?.

i would say replace all intennas just to be safe u can find them very cheap on aliexpress