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In mobile networks, the problem of intermittent and truncated connectivity leads to the growth of opportunistic networks. In opportunistic networks, the disconnected mobile nodes communicated whenever they get opportunity to share the information or their connectivity is resumed. Because of this intermittent connectivity, routing in this type of networks becomes very challenging. Efficient use of resources is extremely important in such conditions. In this work, we propose an innovative routing strategy for opportunistic networks based on the node’s activities. In NABR, we consider node’s past behavior and activities to maximize the message delivery ratio under opportunistic network environment. We also propose a buffer management scheme that efficiently use buffer storage of nodes to reduce message drop rate. To simulate and demonstrate the performance of the proposed NABR protocol the ONE …