Do I need to purchase SIM card separately? June 29, 2022 09:11 Updated No, our Pocket WiFi does not require a separate SIM card. Related articles Are there any settings required for the Pocket WiFi? How do I charge the device? Can it be used outside of Japan? Can I take out the SIM card from Pocket WiFi? Can I use VoIP apps? e.g. Skype, LINE, Whatsapp,... Comments 0 comments Article is closed for comments.