Phones with Dual GPS
Dual GPS
— an additional feature found in modern GPS modules (see the relevant paragraph).Receivers with Dual GPS do not operate on one frequency, like more traditional counterparts, but on two (L1 + L5) — thus receiving two signal packets at once and comparing them with each other. This format of work significantly improves positioning accuracy — in some cases up to 10 – 20 cm. In addition, Dual GPS allows you to correctly process signals reflected from high-rise buildings — this increases efficiency in dense urban areas. However, it is worth noting that it is far from always possible to take advantage of all the pros of this feature. So, full support for L5 is available only in the European Galileo system; in GPS (as of 2020), only about half of the satellites carry out such broadcasting, and in GLONASS it is not expected before 2030. In addition, compatibility may be limited by the capabilities of the smartphone: for example, in some models, Dual GPS mode becomes available only after a firmware update.
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