It also looks like a phone.
Using it as an excuse would be like saying the dirty stranger’s knickers found under the bed “can also be used as a duster! #%¥!”.
An “emergency phone” for “when your smartphone’s battery goes dead” would be a better excuse. The emergency phone will have some godforsaken unguessable password for safety that you have conveniently forgotten if asked. Easy enough happens, doesn’t it...
Naturally any clever ideas on here though, don’t you know, are read by the mumsnet feminazis and used in their “warnings” to non-techie housewives. I expect P*a*r*i*s*B is reading this post. Either that or she and her likes thought of it already. (Don’t worry. Just a friendly reminder that nothing on here is particularly private.)