LEADING THE DAY: Skype announced Sunday that it’s sealed a deal to acquire GroupMe, a group messaging service. The companies didn’t disclose the terms of the deal; All Things Digital reported that Skype paid about $85 million for the company. The acquisition, similar to the Facebook acquisition of Beluga that laid the groundwork for the network’s new Messaging app, brings Skype (and maybe Microsoft) into competition with other high-profile companies looking to retool the SMS space. Facebook and Google have recently launched mobile messaging apps, and Apple is also launching its own version, iMessage, with its next operating system.

Verizon workers begin returning to work: Striking Verizon workers will begin to return to their jobs late Monday, The Washington Post reported, concluding a two-week strike in which 45,000 workers joined the picket lines. On Saturday, the two sides agreed that workers would return to their jobs this week under the terms of a contract that expired on Aug. 6 while negotiations continued.

Facebook, Twitter broke visitor records in July:A comScore analysis of Facebook and Twitter revealed that the site had a record numbers of visitors in July, TechCrunch reported. Facebook hit 162 million unique views in the U.S., while Twitter had 32.8 million visitors to its site. Though Twitter is still far behind Facebook in terms of unique visits, it’s showing steady growth. The report also found that Google’s new foray into social networking, Google+, is also steadily gaining users.

Smartphone patents: Things are heating up in the patent space as the smartphone industry watches what will happen at this week’s Motorola hearing before the International Trade Commission, The Washington Post reported. The hearing will determine whether Motorola — which announced plans to be acquired by Google last week — is infringing on nine Microsoft patents. If the commission rules that the patents are being infringed upon, it could ban imports of Motorola phones.

4G Jobs: A new study from Deloitte finds that implementation of the 4G network could add between 371,000 and 771,000 jobs as carriers invest billions of dollars to build out the high-speed networks. The 4G rollout will increase U.S. competitiveness, the report said, as well as accelerate cloud computing capabilities and provide greater Internet access to marginalized groups such as minorities and rural communities. The report does indicate that the Federal Communications Commission needs to find ways to make better use of spectrum and unlock additional spectrum.

Apple moves away from UDID: In what might be a nod to privacy concerns, Apple is moving away from the unique identifying identification number assigned to each device, TechCrunch reported. The company has reportedly told developers not to use the identification number, which is used for advertising and tracking customer habits.