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H A N D P H O N E U S E R S S U R V E Y 2 0 1 7

P a g e

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Sampling technique

The survey adopted confidence level of 95% and precision of ±2%. There was

only one stage of sample selection as the survey adopted a simple random

sample (SRS) approach. Sampling was done across networks with probability

proportional to size of the networks in terms of subscriptions.

Terms and definition

Basic phones

1

Basic phone also called ‘low-end’ phones - are devices with limited feature

sets, limited or no factory-installed or user-installable value added third party

applications, and no or very limited data connectivity. The ‘basic’- or ‘low-end’

- appellation is a throwback to the early days of the emergence of GSM mobile

technology, where only basic functionality - such as call functions, SMS,

Unstructured Supplementary Service Data (USSD) v1 functionality, and a

phonebook - were needed (and available) to communicate.

Feature phones

2

Feature phone has limited functionality and proprietary operating systems

such as Bluetooth, WAP-based phone browsers and ability to install and run

Java applets and applications and a camera. This device primarily use

narrowband 2G EDGE/EDGE+ speeds for mobile data access. Several feature

phone produced support of 3G network.

1

Source: Mobile Handset Use in Digital Financial Services (03/2017), ITU

2

ibid

Sampling technique

Terms and definition