Ahead of earnings this week, it's worth noting (again) that Facebook, Twitter and Snapchat are doing more to expand their user bases and ad services abroad.

Why it matters: Facing saturation in the U.S. and North America, social media companies are looking to foreign markets as a way to increase ad revenue.

Yes, but: Their reach can only extend as far as mobile and wireless markets allow them to. Which is why in some cases, tech giants are pushing to increase connectivity and app functions abroad to expand their reach.

• Facebook, for example, is helping telecom providers build networks at lower cost, Axios' Ina Fried reports.
• Google and its parent company Alphabet have also invested in connectivity in the U.S. abroad.
• Snapchat has been focusing efforts this year on improving its app on Android, which is used more commonly outside of the U.S.