Https://www.samsung.com/us/business/support/owners/product/galaxy-s7-edge-t-mobile/
http://org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx?CDSite=US&CttFileID=7133594&CDCttType=PM&ModelType=C&ModelName=SM-G935TZBATMB&VPath=PM/201809/20180928054044507/S4/TMO_G930T_G935T_SP_FINAL_180921/start_here.html
Galaxy S7 edge S7
SOURCE: galaxy s7 edge
Check with your sim card first whether it's working or not. If it is working, Try a factory reset.
If that doesn't work either,dial the following code and see whether you gets your 15 digit IMEI ( Don't post it here. Just see whether it is coming)
CODE : *#06#
If you see only a bunch of "0"s or just a "0" or an empty space, you'll need to restore your IMEI
If it is not the case, it should be a hardware fault.
SOURCE: How do you unfreeze your galaxy s7 edge when it's stuck on the start up screen
Soft Reset Frozen Unresponsive Screen Samsung Galaxy S7 S7 edge
Testimonial: "Thank you for the information, it work."
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