diff --git a/tools/wptrunner/wptrunner/browsers/firefox.py b/tools/wptrunner/wptrunner/browsers/firefox.py
index 2324e043f30bbd..bdabeb46f1eed5 100644
--- a/tools/wptrunner/wptrunner/browsers/firefox.py
+++ b/tools/wptrunner/wptrunner/browsers/firefox.py
@@ -164,6 +164,15 @@ def executor_kwargs(logger, test_type, test_environment, run_info_data,
         capabilities["pageLoadStrategy"] = "eager"
     if test_type in ("reftest", "print-reftest"):
         executor_kwargs["reftest_internal"] = kwargs["reftest_internal"]
+        cache_screenshots = True
+        if run_info_data["os"] == "android":
+            try:
+                major_version = int(run_info_data["version"].split(".", 1)[0])
+            except ValueError:
+                pass
+            else:
+                cache_screenshots = major_version < 14
+        executor_kwargs["cache_screenshots"] = cache_screenshots
     if test_type == "wdspec":
         options = {"args": []}
         if kwargs["binary"]:
diff --git a/tools/wptrunner/wptrunner/executors/executormarionette.py b/tools/wptrunner/wptrunner/executors/executormarionette.py
index 3607960b41e513..37c64e1745b3de 100644
--- a/tools/wptrunner/wptrunner/executors/executormarionette.py
+++ b/tools/wptrunner/wptrunner/executors/executormarionette.py
@@ -1059,7 +1059,8 @@ def __init__(self, logger, browser, server_config, timeout_multiplier=1,
                  debug_info=None, reftest_internal=False,
                  reftest_screenshot="unexpected", ccov=False,
                  group_metadata=None, capabilities=None, debug=False,
-                 browser_version=None, debug_test=False, **kwargs):
+                 browser_version=None, debug_test=False,
+                 cache_screenshots=True, **kwargs):
         """Marionette-based executor for reftests"""
         RefTestExecutor.__init__(self,
                                  logger,
@@ -1082,6 +1083,7 @@ def __init__(self, logger, browser, server_config, timeout_multiplier=1,
         self.group_metadata = group_metadata
         self.debug = debug
         self.debug_test = debug_test
+        self.cache_screenshots = cache_screenshots
 
         self.install_extensions = browser.extensions
 
@@ -1225,7 +1227,9 @@ def logger(self):
         return self.executor.logger
 
     def setup(self, screenshot="unexpected", chrome_scope=False):
-        data = {"screenshot": screenshot, "isPrint": self.executor.is_print}
+        data = {"screenshot": screenshot,
+                "isPrint": self.executor.is_print,
+                "cacheScreenshots": self.executor.cache_screenshots}
         if self.executor.group_metadata is not None:
             data["urlCount"] = {urljoin(self.executor.server_url(key[0]), key[1]):value
                                 for key, value in self.executor.group_metadata.get("url_count", {}).items()
@@ -1234,6 +1238,7 @@ def setup(self, screenshot="unexpected", chrome_scope=False):
         if chrome_scope:
             self.logger.debug("Using marionette Chrome scope for reftests")
             self.executor.protocol.marionette.set_context(self.executor.protocol.marionette.CONTEXT_CHROME)
+        self.logger.debug(f"Starting internal reftests with {data}")
         self.executor.protocol.marionette._send_message("reftest:setup", data)
 
     def reset(self, **kwargs):
@@ -1357,7 +1362,7 @@ def __init__(self, logger, browser, server_config, timeout_multiplier=1,
                  screenshot_cache=None, close_after_done=True,
                  debug_info=None, reftest_screenshot="unexpected", ccov=False,
                  group_metadata=None, capabilities=None, debug=False,
-                 reftest_internal=False, **kwargs):
+                 reftest_internal=False, cache_screenshots=True, **kwargs):
         """Marionette-based executor for reftests"""
         MarionetteRefTestExecutor.__init__(self,
                                            logger,
@@ -1373,6 +1378,7 @@ def __init__(self, logger, browser, server_config, timeout_multiplier=1,
                                            group_metadata=group_metadata,
                                            capabilities=capabilities,
                                            debug=debug,
+                                           cache_screenshots=cache_screenshots,
                                            **kwargs)
 
     def setup(self, runner, protocol=None):