![]() (See US 5519760, issued for one of the first works relating to this. Network-based techniques were developed many years prior to the widespread availability of GPS on handsets. The advantage of network-based techniques, from a service provider's point of view, is that they can be implemented non-intrusively without affecting handsets. The location of a mobile phone can be determined using the service provider's network infrastructure. ![]() ( April 2017) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This section needs additional citations for verification.
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