To install Topo, download the .apk
file to your android device if you cannot access the Google Play store.
How to install the .apk
file to your device:
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From the Home screen, swipe up or down from the center of the display to access the apps screen. Open Settings.
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Navigate to Settings > Security and privacy.
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Tap Install unknown apps.
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Find the browser you are using e.g. Chrome or Firefox.
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Download Topo.apk, then tap Open to open the app.