Impact Factor: ISRA (India) = 1.344 ISI (Dubai, UAE) = 0.829 GIF (Australia) = 0.564 JIF = 1.500 SIS (USA) = 0.912 РИНЦ (Russia) = 0.179 ESJI (KZ) = 1.042 SJIF (Morocco) = 2.031 ICV (Poland) = 6.630 PIF (India) = 1.940 ISPC Perspectives in science for 2016, Philadelphia, USA 164 SOI: 1.1/TAS DOI: 10.15863/TAS International Scientific Journal Theoretical & Applied Science p-ISSN: 2308-4944 (print) e-ISSN: 2409-0085 (online) Year: 2016 Issue: 1 Volume: 33 Published: 30.01.2016 http://T-Science.org Muhammad Sadiq CRIDS (Center for Research in Distributed and Supercomputing ) RIU. muhammad.sadiq@crids.org Muhammad Shahid Iqbal School of Computer Science, Anhui University, Hefei, China nawabishahid@yahoo.com Khawar Naveed CRIDS (Center for Research in Distributed and Supercomputing ) RIU. knaveedpak@yahoo.co.uk Muhammad Sajad CRIDS (Center for Research in Distributed and Supercomputing ) RIU. muhammad.sajad@crids.org SECTION 5. Innovative technologies in science. MOBILE DEVICES FORENSICS INVESTIGATION: PROCESS MODELS AND COMPARISON Abstract: The new era of smart devices have evolved in the last few years which has facilitated general public in fulfilling their need with fast and efficient communication devices. These devices in the hands of antisocial activists can cause great harm to public. Due to wide range of smart phones available in the market, an ultimate forensics investigation framework is very difficult to reach. This paper outlines a review of some of the previously used mobile forensics investigation models and also compares the NIST guidelines of cell phone forensics with the other SOPs and available models. Also important stages of the data acquisition as well as for further investigation are identified and used in the new unified mobile devices forensics investigation model. Key words: Forensics, investigation, cell phones, SOP. Language: English Citation: Sadiq M, Iqbal MS, Naveed K, Sajad M (2016) MOBILE DEVICES FORENSICS INVESTIGATION: PROCESS MODELS AND COMPARISON. ISJ Theoretical & Applied Science, 01 (33): 164-168. Soi: http://s-o-i.org/1.1/TAS-01-33-29 Doi: http://dx.doi.org/10.15863/TAS.2016.01.33.29 I. INTRODUCTION Mobile phone technology is basically a complicated technology. Innovation in the technology of mobile phones make forensics of mobile devices more complex and complicated. A major contributor that increase complexity of the forensics of mobile devices is variety of mobile manufactures in the market each having its proprietary software and hardware formats and standards. Presently, mobile devices are used by millions people. The advancements in the technology not only focus features but also, its design and size, which attract the common public. Advanced features of mobiles have not only made it convenient in use for common public, but on other hand, criminals use it for their illicit purposes. Therefore, this device has become a part of investigation to reach the miscreants. The mobile forensics is challenging and requires the recovering of the evidence from the device in a manner acceptable in forensically sound manner. The challenge in mobile forensics is compounded by different processor types, limited processing and memory resources of the mobile phones and different vendor specific OS with some level of security implementation. The power supply in the mobile devices is also an important aspect while investigating the mobile device. While keeping in view the use of mobile devices and the constraints playing role in the investigation of the devices, a need to develop and model an investigating process. The factors involved in making the mobile forensics challenging could be; variety of available operating systems, short life cycle of the product and new models develop very rapidly, the file system is robust, device introduces new communication technologies and efficient performance. II. LITERATURE REVIEW The main and important Components of mobile forensics are as follows: Appropriate method for data acquisition; examining the collected data and analyzing it, and most important is to adapt an investigation process model. A. Forensics Survey: Konstantia et. al. [1] has presented a critical review of forensics of mobile devices in the last 7 years. The mobile forensics as mobile devices have undergone a revolutionary