Question: What is the colloquial name for the urban megaregion between South and Central Texas where Pocket Communications provides unlimited cell phone service?

Context paragraphs:
Organic Theater Pittsburgh: Organic Theater Pittsburgh is a theatre company located in Pittsburgh, Pennsylvania.  It is the first theatre company in Pittsburgh to focus on being "eco-friendly."  Founded in 2011 by Jaime Slavinsky, the company's mission is to create an "organic theatre product" through "a unique rehearsal process based on improvisation" and "relying on Earth-friendly, recycled, and sustainable materials & partnering with local artists, merchants, and environmental organizations."  The company's first performance, a production of Sarah Ruhl's "Dead Man's Cell Phone", was held in ModernFormations on Penn Avenue in July 2011.  The organic theme of the company was reinforced by reducing ticket prices for audience members who brought in a used cell phone to recycle.  The company has been reviewed in such publications as Broadway World, Out Online, Pittsburgh Magazine, and Pittsburgh City Paper.  Organic Theater Pittsburgh uses prominent actors from Pittsburgh's theatre scene.  Jaime Slavinsky received recognition in the Post-Gazette's "Performer of the Year" article for her leading performance as Jean in the company's inaugural production of Dead Man's Cell Phone.

People v. Diaz: People v. Diaz 51 Cal.  4th 84, 244 P.3d 501, 119 Cal.  Rptr.  3d 105 (Cal.  January 3, 2011) was a Supreme Court of California case holding that police are not required to obtain a warrant to search information contained within a cell phone in a lawful arrest.  In a sting operation conducted by local police, the defendant, Gregory Diaz, was arrested for the sale of the illicit drug ecstasy and his cell phone, containing incriminating evidence, was seized and searched without a warrant.  In trial court proceedings, Diaz motioned to suppress the information obtained from his cell phone, which was denied on the grounds that the search of his cell phone was incident to a lawful arrest.  The California Court of Appeal affirmed the court's decision, a ruling which was later upheld by the California Supreme Court.  In 2014, the United States Supreme Court overruled that position in "Riley v. California", holding that without a warrant, police may not search the digital information on a cell phone that has been seized incident to arrest.

San Antonio: San Antonio ( Spanish for "Saint Anthony"), officially the City of San Antonio, is the seventh-most populous city in the United States and the second-most populous city in Texas.  Founded as a Spanish mission and colonial outpost in 1718, the city became the first chartered civil settlement in Texas in 1731, making it the state's oldest municipality.  The city's deep history is contrasted with its rapid growth: it was the fastest growing of the top ten largest cities in the United States from 2000 to 2010, and the second from 1990 to 2000.  Straddling the regional divide between South and Central Texas, San Antonio anchors the southwestern corner of an urban megaregion colloquially known as the "Texas Triangle".

Cell Global Identity: Cell Global Identity (CGI) is a standard identifier for mobile phones cells, providing means to geographically locate connected mobile phones.  If a cell phone is connected to a GSM network then the position of that particular cell phone can be determined using CGI of the cell which is covering that cell phone.  There is a series of related technologies that were developed based on CGI that enhances the location precision: Cell Global Identity with Timing Advance (CGI+TA), Enhanced CGI (E-CGI), Cell ID for WCDMA, Uplink Time Difference Of Arrival (U-TDOA) and Any Time Interrogation (ATI), and the high accuracy terminal based method Assisted Global Positioning System (A-GPS).

Sage Telecom: Sage Telecom, Inc was founded in 1996 as a competitive local exchange carrier (CLEC) reselling telecommunications primarily in rural markets served by SBC Communications.  The company provided local phone service, local bundled phone service and dial up internet access in Arkansas, California, Connecticut, Illinois, Indiana, Kansas, Michigan, Missouri, Ohio, Oklahoma, Texas and Wisconsin.  In February 2006 the company announced eSageLink, a high-speed dial up Internet service available first in and around Muncie, Indiana.  In January 2007, Sage announced it had been acquired by hedge fund Silver Point Capital.  In July, 2012, Sage was acquired by Telscape Communications.

Motorola Rival: The Motorola Rival A455 is a Verizon Wireless cell phone launched in June 2009.  The phone was a pocket sized slider with QWERTY keyboard for messaging; and also featured touch screen multimedia.  The cell phone comes in Tin Silver and Purple.

Mobal Communications: Mobal Communications is a telecommunications company that provides international cell phone and satellite phone service.  The United Kingdom and Japan divisions are named Mobell Communications.  Mobal also operates a US domestic service named Mobal Freedom.  The company was founded by current chairman Tony Smith.

My Windows Phone: My Windows Phone (previously "Windows Phone Live") was a free online companion service for Windows Phone mobile devices from Microsoft.  The service, released in conjunction with the launch of Windows Phone 7 on October 21, 2010, provides users with a free mobile phone back-up solution by wirelessly synchronizing contacts, calendar appointments, photos, and OneNote notebooks with a various tightly-integrated Windows Live services including People, Outlook.com Calendar, and Microsoft OneDrive.  Users can access and manage their information stored on their Windows Phone devices via a password protected online portal using their Microsoft account.  My Windows Phone also includes the Find My Phone service which facilitates tracking of a lost or stolen phone over the Internet or by messages.  Similar phone finder services under various names are available for other families of smartphones.  A similar service for Windows Mobile devices was available with Microsoft My Phone, withdrawn in 2011.

Pocket Communications: Pocket Communications was a PCS CDMA 1xRTT provider of unlimited cellular phone service based in San Antonio, Texas, United States.  It offered service plans similar to those of Cricket Communications and MetroPCS which mostly consist of unlimited local phone service without having to sign up for long-term contracts.  It was merged with Cricket Communications in late 2010, with Cricket holding an initial 76% stake in the joint venture and Pocket holding 24%.

Wim Sweldens: Wim Sweldens is a Belgian American business leader notable for innovations in communications and signal processing technology.  He developed algorithms for compressing three dimensional images into billions of tiny triangular modules.  At telecommunications firm Alcatel-Lucent in New Jersey, he led development of new cell tower technology called "lightRadio" which reduces the size of transmission equipment dramatically.  The equipment uses only basic electrical power and can be placed indoors and linked to optical fiber cables; it enables mobile networks to operate with much less electricity, halving CO2 emissions and reducing the carbon footprint, and permitting cell phone service to reach more people over expanded geographic areas.  The technology may mean the end of cell towers within ten years, according to several reports.

Supporting paragraphs: Pocket Communications San Antonio
Answer: Texas Triangle