depend how deep u go or place that router/phone at

1st layer of wall is fine
after the 2nd one, you'll see it start jumping already

mine doesn't
only 1st wall can...the 2nd wall which is just right next to me right now...this wall isn't even 100% covered...just bottom half, top half is empty
but once i cross that wall, that 5G disappear

if your whole house have 5G meaning that tower is really near to u to get that kind of coverage(so near u can see it)

5G in malaysia has very limited range