Calleris is an application for searching and reporting spam phone numbers. This is a case study of social goods that I did in the last course of my Google UX Design certification
Calleris is a mobile application that enables users to identify the caller or sender of a text message by searching their phone number on the app. Additionally, it allows users to report any phone numbers that they believe are spam or junk.
The frequency of individuals experiencing harassment and fraud from unfamiliar phone numbers is on the rise. These callers often utilize unknown SIM cards to contact people, as these numbers are untraceable or not registered to the caller. Many individuals feel compelled to answer calls from unknown numbers for personal or professional reasons, yet the majority of these calls turn out to be spam or junk calls. This has led to feelings of frustration, annoyance, and emotional distress, particularly among workers and older individuals. Unfortunately, they cannot simply ignore calls from unknown numbers as they are unaware of the caller's identity.
Create a mobile application that enables users to identify unknown callers and report phone numbers as junk or spam.
I utilized the interview data from well-known newspapers and a set of questions related to nuisance SIM cards and user requirements. A survey conducted by Dantri newspaper, which involved 6,353 individuals, revealed that an astounding 98% of respondents had encountered problems or been deceived by nuisance SIM cards. Based on the interviews, it was evident that almost everyone has experienced unwanted spam calls, leading to frustration and time wastage. People are eager for an effective solution that can help them avoid such calls from unsavory individuals.
Lin Pham is an HR officer, she wants to know who is calling her because she couldn't help but pick up the phone due to her work and she wants to avoid bad caller
With the app designs completed, I started to work on designing the responsive website. I used the sitemap to guide the organizational structure of each screen’s design to ensure a cohesive and consistent experience across devices.
I did a quick ideation exercise to come up with ideas for how to address gaps identified in the competitive audit. My focus was specifically on searching for a phone number and reporting a phone number
I shown participants the high fidelity prototype to experience the main flow of searching a phone number and report. The usability findings are listed as following
When making a report, users want to know general information about a reporting phone number to see the reliability of this phone number or rating about it.
Users want to be asked to confirm they want to submit the report in case users don’t want to report anymore or mistake tapping the submit button or change their mind.
When browsing the articles on the homepage, users want to quickly know what other users have assessed about this phone number by looking at keywords rather than reading a long comment.
Based on the insights from the usability studies, I applied design changes by adding data response when users just filled in the phone number. This help users have more information about the phone number they are reporting
Additional design update are about adding the confirmation popup when users tap the submit report.
Another additional design changes are about adding keywords related to the junk phone number at any reporter’s post or in search result
Searching is the core feature of the App, so the search bar is placed at the top of the page, which is easy to find and start
The search result is designed simply while providing all the needed information about the phone number. Users quickly know if that phone number is bad or not, which keywords related to this number, how many people searched and reported it, and how other users recently talked about this phone number. Users can also report the phone number that they are searching for without moving to the report tab
The report page only asks 3 required questions and 2 optional questions. Users can quickly finish their report by answering 3 questions. Some magic from this report page includes. First, When finishing the phone number input, the page will show important data about this number. Second, when inputting a keyword about this phone number, users will easily choose the most suitable one from the suggested list All suggestions are from the phone number’s data and other user’s reports Third, users choose a kind of media to upload any proof of this phone number such as image, video, and audio. After finishing the all needed required information, the call to action button will turn on
When users finish the report, a confirming popup is shown to make sure users want to report. Then another popup will let users know how the report will be processed. At the time, the report is approved, users will receive the popup as a notification and allow users to check their report directly. On the report page with the user’s report, it is easy to recognize the just now report from the users at the top list and highlighted
The designs for screen size variation included websites for desktop, web tablet, and mobile web. I optimized the designs to fit the specific user needs of each device and screen size.
Users shared that from the day they started using the Calleris app, their lives and their work improved a lot because they are not disturbed or had an angry mood with unknown numbers. Many users also believe that the introduction of the application will help reduce the rate of users being scammed and limit the ability of scammers to perform bad actions.
I learned that even though the problem I was trying to solve was a big one, diligently going through each step of the design process and aligning with specific user needs helped me come up with solutions that were both feasible and useful.
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