Ultra Mobile's $19/month prepaid plan offers unlimited talk, text, and 3GB of high-speed 5G/4G LTE data on the T-Mobile network. It includes perks like unlimited international talk to over 90 destinations and monthly international call credits.

However, user experiences vary widely. Some praise its ease of activation and reliable service in the US, while others report significant issues with international roaming, particularly in Latin America. The advertised 'unlimited data' has caused confusion, as the plan actually provides only 3GB of high-speed data.

Customer service appears to be a major pain point, with reports of long wait times, unhelpful chatbots, and abrupt disconnections during live chats. Some users also experienced technical difficulties with voicemail access and incorrect caller ID display.

For travelers, this plan can be hit or miss. While it worked well for some in multiple countries (including Venezuela and Panama), others found it unreliable after initial use. The ability to make free calls to Japan was particularly appreciated by Japanese users.

Before purchasing, carefully consider your needs and research coverage in your destination countries. While the price is attractive compared to T-Mobile's direct plans, potential technical issues and customer service challenges might make this plan less appealing for some users.