Interviewers in all surveys are to contact their respective survey managers/supervisors first, who will take reasonable efforts to determine the cause of the issue and possible solution including describing the issue and searching for similar issues in the users’ forum and this support site. If the issue is determined to be caused by the Survey Solutions code, it should be elevated to the developers including a detailed description, steps to reproduce the issue, etc.

January 8, 2020

Interviewer App Settings Dialog

Interviewers normally should not change any of the settings on this page, but may be required to do so based on the instructions of their supervisors or technical support. Some combinations or values of these settings may cause errors in operation/synchronization. Change these settings only if you know what you are doing. If you do make any changes compared to the default values, and you are requesting support from the development team, you must mention in your question, issue description, or the support request, which settings you’ve changed and which values you’ve specified.

January 8, 2020

Interviewer App Diagnostics Dialog

The Diagnostics dialog provides tools for troubleshooting. Most of these tools require the tablet to be online (connected to the Internet). The Survey Solutions support may instruct you to use one or the other tool from the below toolset. Below is the explanation of these tools with some example illustrations. Version NNN. Check for a new version The Interviwer App will try to connect to the synchronization point (server) and check for the availability of a new version of the App.

January 8, 2020

Synchronization problems

Synchronization of the data between the tablet and server is a highly complex process of communication during which a number of actions are undertaken on both ends based on the flow of incoming data. Survey Solutions hides the complexity of it behind a simple Synchronize button available to the interviewer at any time. Normally, when synchronization is completed successfully, the interviewer receives a confirmation message and some summary statistics describing the actions taken (such as number of received assignments or transferred interviews).

May 16, 2018

Consequences of relinking a tablet device

When an interviewer account is created at the HQ, an interviewer may connect from any tablet. Once the interviewer has signed in, that device ID is remembered and the interviewer must continue using the same tablet. No other interviewer will be permitted to use the same device: they will not be able to enter their username unless the interviewer app is uninstalled (with immediate loss of all unsynchronized data). It is not possible for one user to work on several devices.

September 21, 2016

Shape file overlay

This feature is added in v18.06 for beta testing. We recommend our users to utilize it with a caution and keep us posted about the experiences with it. A single shapefile can be overlayed over the baseline map in a geography type question. This shapefile must be placed into the folder TheWorldBank/Shared/ShapefileCache/ and must contain all three mandatory shapefile components (*.shp, *.shx, and *.dbf) accompanied with the *.prj. Consult the ESRI tools and documentation for the structure of the shapefile and the role of these components.

June 6, 2018

Setting photo size and quality

Survey Solutions v5.22 automatically restricts the size of the images captured by the Interviewer App (see limits). The information below is applicable only if you wish to produce files even smaller than those automatically produced. Survey Solutions image (picture) question does not specify any particular size or quality of the photo to be captured with the tablet’s camera. Instead Survey Solutions captures the image supplied by a standard picture provider (typically the Camera application) installed in the OS Android.

March 16, 2017

Set up an Interviewer tablet by scanning a barcode

When an interviewer launches the Interviewer App for the first time she needs to provide the following three parameters: URL of the server (synchronization point), login of the interviewer (account name on that server), and the password of the interviewer. Typing in the server address may be time consuming and prone to errors, so to simplify the process Survey Solutions permits entering this information by scanning a barcode. This is especially useful for the ITs setting up a large number of tablets in the office for many interviewers at the start of the survey.

October 24, 2018

Multiple interviewers using the same tablet

Survey Solutions uses device tracking mechanism where for each interviewer account there is an indication of the currently linked device. In short this means that at any moment any interviewer may be utilizing only one device for data collection. Re-linking of the devices is possible, but it has some important consequences (explained here). At the same time it is still possible for multiple interviewers to use the same tablet for data collection, but every interviewer must have a different user account in the Android operating system to permit this.

May 7, 2018

Updating the Interviewer application

Why update There are several reasons why: New features. With most releases of Survey Solutions, new features are introduced–new question types, new user interface, new actions, etc. To take advantage of new features, the Interviewer application must be updated. Bug fixes and performance improvements. Each releases of Survey Solutions contains numerous bugs and performance improvements. To avoid bugs and ensure the best performance, the Interviewer application should be updated regularly.

February 22, 2018

Interviewer App interface language/localization

The Interviewer application responds to the device language setting of tablets. Localization affects the interface of the application, such as menus, dialogs and application error messages. The languages currently available are listed in the localization overview article. Note that you can still design the questionnaire itself in any language, including the texts of the questions, their options, instructions, and validation messages. Survey Solutions also allows multilingual questionnaires.

July 13, 2016

Synchronization & Completing the Interview

1. Logging in You can log in using the user name and password that you received from your supervisor. Tap on the eye icon to see your password to make sure you have entered it in correctly. If you cannot log in, although you are sure that the username and password are correct, synchronise the tablet (see next step)  2. Synchronize You should synchronize your tablet as often as your supervisor has instructed you to.

June 24, 2016

Download and Install the Interviewer Application

Step 1: On the home screen of the tablet, click on the Applications button. The button is usually located in the middle of the bottom toolbar and the icon is a circle with six dots. In the applications menu, Select Settings. Select Security and make sure that Unknown Sources - Allow installing application from sources other than the Play Store is selected/ticked. Step 2: Open the Chrome browser and navigate to the address of your server.

June 23, 2016

Interviewer App Notifications

The Interviewer App reminds the interviewers about recommended actions when certain conditions are met by issuing user notifications. It is expected that if the interviewers follow the notifications issued by the software their work will be more efficient, and will let other team members (e.g. supervisors) to act sooner on the collected data. Some notifications are shown inside the Interviewer app (at the dashboard) and some are shown in the Android system notifications tray.

June 3, 2019

Password Best Practices

All users: Do not write your password on a sticker attached to your device or in another obvious place. Do not let any other person know your password. Do not rely on another person to communicate the password to you unless this is an established procedure (in other words it is normal that the headquarters users set a password for the interviewers, but it must be communicated directly to the interviewer, not through another interviewer).

April 5, 2019

Interviewer Password Reset

This article describes the actions of the supervisor in case the interviewer forgets the password that was assigned to him. Survey Solutions doesn’t store the passwords of interviewers in the clear text. So if it is forgotten, no user may look it up inside Survey Solutions, neither the Supervisors, nor the Headquarters, nor the Administrator users. Important: The interviewer may not change his own password himself. This requires cooperation of his supervisor or a headquarters user.

April 5, 2019

Interviewer Dashboard: Managing the Workload

Overview of the Interviewer Dashboard The Interviewer dashboard offers an overview of the interviewer’s assignments and the state of completion they are in. The tabs displayed at the top of the dashboard sorts interviews by their status. Navigation between tabs To navigate between the different tabs, the interviewer can either tap on the tab at the top bar or swipe left or right. To help interviewers differentiate between the different tabs, the color of the dashboard will change based on which tab the interviewer is currently in.

July 5, 2017


Sending completed interviews and receiving new ones The synchronization button is how the interviewer initiates an information exchange between their tablet and their supervisor’s laptop. Synchronization performs two tasks. First, it automatically pushes any completed assignment to the supervisor for review. Second, it automatically pulls all new assignments and data collection instruments onto the interviewer’s tablet. After synchronization is complete, the number of new assignments received, number of completed interviews sent, and so on are clearly displayed.

July 15, 2016

Quality Control & Marking Interviews as Complete

Checking whether all questions have been answered Quality control starts with the interviewer. The interviewer should thus do everything within their power to ensure that all questions are answered. The interviewer application offers three ways to do this. The first is the classic method that one might use with a paper questionnaire. The interviewer simply flips the questionnaire looking for unanswered questions or answers that have triggered red error messages.

July 14, 2016

Moving Around the Questionnaire

Overall Interviewers should strictly follow the survey protocol for administering a questionnaire (e.g. asking earlier questions before later questions, completing earlier modules before later modules), but may occasionally need to move around the questionnaire for good reasons (e.g. review their work, move between rows of the roster if the respondent corrects an earlier answer, administer an independent module when the key respondent for that module is present). The interviewer can move around questionnaires in several ways.

July 14, 2016


Comments can be left for any question. This may useful to explain answers that you have confirmed but that may appear strange or wrong to your supervisor. To leave a comment, press for a moment on the question of interest. After a few seconds, a comment field will appear, into which you can type any arbitrary long comment. Comments can also be left for you by your supervisor. These will likely be questions about the answers you have recorded.

July 14, 2016

Answering All Question Types

The Interviewer application allows several different types of questions: numeric, text, single-select categorical, multi-select categorical, list, date, GPS, barcode, and picture. As an interviewer, you must know how to answer each of them. To help you with that text, each question type is briefly explained below with visual aids.  Numeric Questions that take a numeric response have a field for an open numeric answer. When that field is tapped, the numeric keyboard appears so that the interviewer can compose an appropriate numerical response.

July 14, 2016

Questionnaire Interface & Answering Questions

Overview of Questionnaire Interface Answering questions How to know when you have answered a question There are a few ways that interviewers can know that they have successfully answered a question. First, the question shows some answer. Second, the tablet vibrates and the questions are surrounded by a red outline, if the recorded answer is not valid. Vibration can be disabled by navigating to Interviewer’s settings and removing the checkbox next to Vibrate when invalid answer is given.

July 14, 2016

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Web Interviewer Overview

Web interviewer is a facility of Survey Solutions allowing the interviewers to work from the server, similar to supervisors and headquarter users. Similarly to the Interviewer App on the tablet, the web interviewer allows interviewers to view their dashboard and conduct interviews. There are, however, some differences between the web interviewer and the Interviewer App: Interviewer App Web Interviewer Devices Android-based tablets Any devices with a web-browser

January 29, 2020