aloSIM

aloSIM specializes in straightforward, fixed-data plans for Vietnam travel. Their two main options are clear: 20GB at $30 or 50GB at $100, with a free international phone number included so contacts can reach you throughout your stay. The pricing structure removes guesswork about overage charges or hidden costs.

This setup appeals to travelers who want predictable spending and guaranteed data allocation. If you'll be video calling back home or uploading photos regularly, the 50GB tier provides breathing room without premium pricing. The included phone number means you're not juggling multiple contact methods for friends and family.