Chosen Solution
I am having a problem with the signal on my phone, i changed the antenna and the board but i am still not getting any signal, what else could i check? is it the panel that covers the board that is missing could be the problem?
Sometimes it could be a very simple problem 1st try checking in settings ->Network connections -> Mobile Networks. See if the network is in auto or manual. If Auto try changing it to manual and see if its showing the list of networks. Select your carrier and you are good to go. If not you can try changing the sim card sometimes it could be a sim card issue as well.