Apps not loading/working with data connection

pixiestyx12

    I have an LG Stylo 2 Plus. I recently had to get a new SIM card because my other one was causing problems. My phone works fine now (send/receive calls & texts, connect to wifi, connect to data), but when I am out and about and have data on, I can't use any of my apps. I get a notification that data connection is allowed. The 4G LTE symbol is at the top of the phone. But if I try to open/refresh Facebook, my Yahoo Mail app, or any games on my phone, nothing loads or refreshes. I can use them all fine on wifi, but data is a no-go. Has anyone else had this problem after getting a new SIM card? Is there some way to fix this? I've reached out to T-Mobile support via Facebook and someone was trying to help me, but nothing was working. I'm at my wit's end trying to figure this all out. What can I do?

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