A field technician replaces the main system board of a cellular-capable tablet and attempts to install an internal memory upgrade during the repair. After reassembly, the device powers on and boots correctly, but it fails to register on the cellular network despite having a valid SIM card inserted, and the newly purchased RAM module physically does not fit into the expansion slot. Which TWO of the following best explain the root causes of these issues?
- The technician needs to register the new system board's IMEI with the cellular provider rather than assuming cellular access relies solely on the SIM card's IMSI.Answer
- The technician selected a standard full-sized DIMM module instead of the compact SO-DIMM form factor required for mobile device expansion slots.Answer
- CThe technician failed to perform a complete deep discharge cycle on the lithium-ion battery prior to replacing internal hardware components.
- DThe technician forgot to connect a high-voltage fluorescent inverter board required by modern mobile display panels.
Answer
The technician must register the new system board's IMEI with the cellular provider to restore network registration, and the memory upgrade failed because a full-sized DIMM was used instead of a mobile SO-DIMM module.
Replacing the main board changes the device's International Mobile Equipment Identity (IMEI), which must be updated with the carrier for cellular service activation. Furthermore, mobile devices use SO-DIMM form-factor memory rather than standard full-sized desktop DIMMs.
Step-by-Step Solution
Key Concept
Mobile Device Hardware Identifiers and Memory Form Factors
Estimated Time:1m 30s