This study replicates the research conducted by Pérez-Paredes, Ordoñana Guillamón and Aguado Jiménez (2018) on language teachers’ perceptions on the use of OER language processing technologies in mobile-assisted language learning. It expands the initial research study by adding Polish, Portuguese, and Turkish educational contexts, surveying 239 English as a foreign language teachers in these three countries. The main findings indicate that there are several differences among the three countries, including institutional support regarding the use of mobile devices and the training provided to the teachers. Based on the data collected in these countries, it was found that mobile devices are mainly used for teaching and learning on online platforms. Smartphones were one of the most used devices in English language teaching, while computer labs at schools seem to have lost their popularity. Regarding the technologies available, the results of the study reveal that the participants are most familiar with online dictionaries, spell checkers, and online collocation dictionaries, and the participants’ qualifications are linked to certain differences in familiarity and use of technologies in the classroom. Variables such as gender, age, and years of experience do not show any difference in the familiarity or frequency of use of those technologies. The main findings of the study point out the importance of institutional support and training regarding the use of mobile devices and open educational resources, which are no longer a choice but a necessity in education.