This paper assesses the performance of mobile messaging and VoIP connections. We investigate the CPU usage of WhatsApp and IMO under different scenarios. This analysis also enabled a comparison of the performance of these applications on two Android operating system (OS) versions: KitKat or Lollipop. Two models of smartphones were considered, viz. Galaxy Note 4 and Galaxy S4. The applications behavior was statistically investigated for both sending and receiving VoIP calls. Connections have been examined over 3G and WiFi. The handset model plays a decisive role in CPU usage of the application. t-tests showed that IMO has a better performance that WhatsApp whatever be the Android at a significance level 1%, on Galaxy Note 4. In contrast, WhatsApp requires less CPU than IMO on Galaxy S4 whatever be the OS and access (3G/WiFi). Galaxy Note 4 using WiFi always outperformed S4 in terms of processing efficiency.

翻译：本文评估了移动电文和VoIP连接的性能。我们在不同情况下调查了“WhesApp”和“WiFi”的CPU使用情况。我们调查了“WhesApp”和“海事组织”在不同的情景下对“WhatsApp”和“Oripop”两种Android操作系统(OS)版本(KitKat 或“Lollipop )的使用情况进行对比。考虑了两种智能手机模式,即Galaxy Note 4和“Galaxy S4 ”。对发送和接收“VoIP”电话的应用行为进行了统计性调查。对3G和WiFi的连接进行了检查。听筒模型在“CPU”应用程序的使用中发挥着决定性作用。在“Galaxy”注4中,通过测试显示“G-App”和“WiFi”的处理效率方面,“WiFi(3G/WiFi)使用“Galax Note 4”系统说明比“S4”要求比海事组织少。