Twitter has once again witnessed a healthy mobile quarter. Revealing its financial results for Q1 2014, Twitter has announced that the service’s user growth has slowed while its mobile advertising share has grown. The social network has now passed 255 million monthly active users, 198 million of which were monthly active mobile users as well.

Some of the other milestones that are worth noting are listed below:

1. Average Monthly Active Users (MAUs) were 255 million as of March 31, 2014, an increase of 25% year-over-year.

2. Mobile MAUs reached 198 million in the first quarter of 2014, an increase of 31% year-over-year, representing 78% of total MAUs.

3. Advertising revenue totalled $226 million, an increase of 125% year-over-year.

4. Mobile advertising revenue was approximately 80% of total advertising revenue.

Last quarter, Twitter had shared that it had 241 million monthly active users and 184 million monthly mobile active users. Mobile which constituted 65 percent of advertising revenue for Q2 FY2013 saw it up by 75 percent making it $165 million of the $220 million Twitter made in ad revenues.

However, growth, which was a problem last quarter, still remains to be a concern for the network. The social network is still having problems with attracting new members. The recent design changes and the profile re-design is a move that is being looked at to attract new users.

Although Twitter isn’t facing problems in making money via mobile, it is the user adoption that could be a concern to investors.