Vivo’s Signal Interfering with Mobile Phone GPS

In early March, a TecMundo reader contacted our editorial team to report an alleged incompatibility between the GPS signals from some Android smartphones and Vivo’s mobile internet network.Resident of Porto Alegre (RS), the electrician engineer Marcelo Dal Alba sent an email saying he could not use apps like Google Maps and Waze in his 3rd generation Moto G.

“The GPS of my Motorola smartphone has recently been running intermittently, making it unfeasible to use navigation applications,” said Marcelo.”Convinced that this was a problem with the device, I reported it to a colleague who immediately responded by saying that his HTC-branded cell phone was also experiencing the same problem,” he concludes.

Vivo's Signal Interfering with Mobile Phone GPS 1

“This colleague, however, realized that GPS instability curiously only appeared when using 3G data from Vivo. With the network connected to other providers, there is no problem with localization tools. From there, we conducted tests that found that GPS works normally when configuring 2G as the preferred network. So, in short, the problems appear only with the operator’s 3G network Vivo on some Android devices,” explains the reader.

Smartphone from Vivo

Troublesome Hardware

Marcelo himself offered us a link to a topic in the official forum of Motorola, where another Brazilian – simply identified as Peralta – reports the same problem with his Moto X 2nd generation. He also argues that the error only exists when using a Vivo chip in conjunction with high-precision GPS (the famous A-GPS, which uses the carrier’s antennas to facilitate the satellites’ localization process).

As we can see in the video below (posted by Peralta on your YouTube channel), GPS really shows itself quite flawed when it is used by navigation software – the location marker frequently freezes and jumps from one place to another, Use of apps in transit.”With TIM and Claro operators’ chips on the same devices, the problem disappears and navigation works perfectly,”says the internaut.

Peralta later claimed to have contacted the engineering department of Motorola, which confessed to the existence of an incompatibility between the hardware used in some devices of the company, Android 5.1, and 4G (To check 4G definitions, see AbbreviationFinder). According to the company, the component used to capture the GPS signal in certain devices suffers interference from the frequency used by the Brazilian LTE.

The solution? Configure the phone to use 2G networks when using applications that require A-GPS, since Motorola is still working on a way to get around this incompatibility. In addition, it is worth remembering that the problem also seems to affect gadgets of other companies – according to Marcelo, it was also possible to detect the same error in a HTC One M7 and in a Samsung Galaxy S5 Mini.

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Answer from Vivo

TecMundo contacted Vivo to find out what the company has to say about it. According to the operator, the supposed interference between the signals is really a problem of the device. “Mobile phones need to be homologated by Anatel to be enabled by the operators of the Personal Mobile Service and used in Brazil.This ensures compatibility with the technologies adopted in the country and the fulfillment of the technical requirements of operation, guarantee conditions, technical assistance and quality “, explained the company.

It is also worth noting that several TecMundo writers use Vivo mobile internet service on a daily basis (in other smartphones other than those mentioned in this article) and have never had any problems with GPS devices. Again, this indicates a specific interference on certain mobile devices.Is that you?Have you ever suffered from this kind of mistake? If so, tell your story in the comment field.

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According to Marcelo Dal Alba, all the cell phones of his friends and colleagues that until then suffered with the problem of interference in the A-GPS began to function perfectly within 24 hours after the publication of this article. Although this sequence of events can be judged as an incredible coincidence, TecMundo wants to know: Is your smartphone working perfectly now? Leave your story in the comments field.