Mobile ad hoc network (MANET) is one of the technologies developed to improve the communication quality of devices. They are a cluster of wireless mobile devices that are suitable for any infrastructure in a centralized management process. The major limitations of mobile communication are high power consumption, high traffic congestion, and limited privacy and security among the devices. A multipath routing with trust analysis using an efficient scheduling model MTAGA is developed to overcome such drawbacks among the devices in this article. The core contributions of this article are multipath routing protocol, trust analysis among mobile devices, and TDMA scheduling process. The presence of this method of routing overhead reduces the loss of data packets and network delay. These modules are simulated in the software called ns3, and the parameters that are considered for result analysis are throughput (TP), packet delivery ratio (PDR), network average delay (E2E delay), routing overhead (RO), and energy efficiency (EE). In this regard, the MTAGA is compared with the preferred protocols, and as a result, it maximizes the efficiency and delivery ratio of the devices.