Often, these failures can be fixed by installing software updates or re-installing the entire operating system. For such repairs, we use software tools recommended by the mobile phone manufacturer or by independent manufacturers who support these devices. With software updates, it is sometimes necessary to back up user data, provided this operation is not affected by the malfunction of the device itself. With software updates and data backup, it is also desirable to perform calibration and fine-tuning of all device parameters.

In contrast to software servicing, hardware interventions on the device require disassembling the device and replacing a certain assembly or part that is defective to approach the repair of the failure.

Over the last 20-30 years, we have witnessed incredible shifts in the development and design of mobile phones. Today's mobile phones have experienced significant innovation and have undergone true evolution in design as well as complexity and operability. Failures on devices and their removal have undergone a real revolution. In today's mobile phones, the most common faults are related to damage to the display, other parts of the case, charging, or battery malfunction. With the development of mobile design, the phone switches both the access and mode of servicing, as well as the necessary tools for successfully removing failures. A modular approach in making and assembling the phone helps us to easily repair the defective part of the device by removing a certain assembly or module of the phone in a short time and with an affordable price.

Designing contemporary mobile devices, the main focus is on making the new device perfect with a compact design, highly waterproof and dustproof, and integrating all elements without clear transitions into a single whole. To access the service of a modern mobile phone, we need a set of necessary tools, as well as the necessary knowledge for procedures and methods of disassembly and assembly of devices.

In most of the newest mobile phones, the largest surface of the device is covered by the display module, which makes it mostly exposed to damage and malfunctions due to falls and mechanical impacts. Plastic and rubber, which were used in older devices, are now replaced with glass and aluminum, and due to sensitivity to falls, more frequent damage to these circuits has taken place. Major changes have been made in the device's connection systems, and most of today's phones have a micro USB or lightning connector instead of the robust connectors that were once used. This novelty in design and size has led to frequent faults on charging connectors and problems associated with the connection of the device.

The emergence of powerful camera modules on mobile phones has attracted many users to use their devices for making great photos and videos. However, this has also led to a set of failures and problems related to the operation of these circuits and the quality of those recordings.

Numerous sensors are present in mobile phones, and frequent falls as well as inadequate handling can cause some problems and anomalies in the operation of your devices. The set of sensors is located on the base of the phone, and due to high integration and a very small area, the whole assembly of the base plate is most often changed. Older devices often changed the defective elements on the baseboard, whereas modern mobile phones usually change the entire assembly of the baseboard due to the size and degree of integration.

The battery for the power supply of the mobile phone has also undergone significant changes in design and quality, as well as the storage capacity of the power. Most of the batteries are integrated into the device itself and are not exchangeable by the users, but it is necessary to partially or completely disassemble the device in a service center with a set of tools and expert knowledge.

Due to advancements in design and the application of modern technologies, today's mobile phones are much more resistant to moisture and liquid damage compared to before. As a result, such failures are less common. However, if liquid does penetrate the inside of a damaged device, repairing it can be very challenging or impossible, rendering it unusable.

To meet design requirements and provide compactness and protection for sensitive circuits, a large number of mobile phone manufacturers use modern materials in their production processes. Glass, metal, and composite materials are the main raw materials that dominate the production of mobile phone cases, and improving the characteristics of these materials will determine the trend in design and phone manufacturing in the future.