Proximus Belgium

Proximus lets European travelers use their Belgian number in Vietnam via a Daily Roaming Pass, so your existing phone plan simply extends abroad. The standard out-of-EU pricing applies, meaning costs won't surprise you relative to other EU carriers' international rates.

Suited for Proximus customers in Belgium or elsewhere in Europe who want to keep their existing number while traveling. The daily pass model works well for unpredictable usage or short trips where you don't want to commit to a full roaming bundle upfront.