When T-Mobile launched Global Plus earlier this month, it offered unlimited high-speed data while roaming in a Simple Global country. Now it looks like T-Mo has tweaked the add-on a bit with regard to high-speed data roaming.

T-Mobile has revealed that its Global Plus add-on now includes 15GB of high-speed data while roaming in Simple Global countries. The price for Global Plus remains the same, at $50 per month for customers on a T-Mobile One plan. If you signed up for the previous Global Plus add-on, it should be grandfathered.

In addition to that 15GB of high-speed data in Simple Global countries, T-Mobile customers who sign up for Global Plus also get the following features:

• 5GB high-speed, international tethering in Simple Global countries
• 5GB high-speed data while roaming in Canada and Mexico
• Unlimited texting and calling at $0.00 per minute in and between 210+ countries and destinations
• Unlimited Stateside International Talk and Text
• Unlimited 4G LTE Smartphone Mobile Hotspot in he U.S.
• Unlimited HD video streaming (must be activated via T-Mobile app or My T-Mobile) domestically and abroad in 210+ countries and
• destinations
• Gogo in-flight all flight long (unlimited flights/sessions) n Gogo-enabled domestic flights
• Name ID
• Voicemail to Text

Other details of the Global Plus add-on that are worth mentioning include the fact that once your 15GB of high-speed data runs out, your speeds will top out at 128kbps. Additionally, if your line already has a T-Mobile One Plus or T-Mobile One Plus International add-on, the latter of which was discontinued earlier this year, then you’ll have to remove that feature in order to add Global Plus.

Some T-Mobile customers on Reddit and T-Mo’s support forums have reported that they’re experiencing extremely slow speeds after adding Global Plus. Customers say that they’ve run into the issue while traveling in Afghanistan, Hong Kong, Taiwan, Thailand, Italy, and other places. It’s unclear exactly what’s causing the problem, but I’ve reached out to T-Mobile about it and will update this post if I hear back. Until then, know that if you’re encountering slow speeds with Global Plus, you’re not alone.

Global business plan

For organizations with 100+ lines and teams that travel extensively, Global Business Plus gives them
international high-speed data on their smartphones with tethering—as well as more international calling.
•Unlimited talk, text and 4G LTE device data in U.S. and 210+ countries and destinations, where available
•Unlimited 4G LTE smartphone mobile hotspot data stateside, plus 5GB high-speed smartphone mobile
hotspot data in 210+ countries and destinations
•5GB high-speed data while roaming in Canada & Mexico
•Unlimited HD video streaming (must be activated)
•Gogo® in-flight all flight long (unlimited flights/sessions)
•Voice calling and messaging in Canada, Mexico and the U.S. (unlimited calls to landlines in 70+
countries and to mobile numbers in 30+ countries) with unlimited texting