Eh if u drop s7 edge , ofc it will crack but if u drop it on like let say you tryin to put it back on ur pocket and u accidentally drop it , it wont crack or anything *did this like 100 times xD*
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but if i were you i would get Screen protector/tempered glass and a case ofc *spigen,Samsung LED View Flip Cover Case ($49),Caseology Envoy Series Case ($17),Otterbox Symmetry Series ($40),Unicorn Beetle Pro Series Case ($18-20)*