

Might be more challenging.
Laptop, its simple, if wifi and bluetooth works, its gonna work around the entire world (it’s all standardized).
Phones? I mean the main functions of a phone is phone calls and data use. Every country has different bands, and some carriers/countries have IMEI whitelisting.
Strategic = Hiroshima getting obliterated
Tactical = The Imperial Palace is obliterated, but rest of Tokyo is mostly intact.